Document:

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                              CONSULTING AGREEMENT

         This Consulting Agreement dated as of June 1, 2000 by and between
DualStar Technologies Corporation, a Delaware corporation having its address at
1 Park Avenue, New York, New York 10016 ("DualStar"), and Hades Advisors LLC, a
New Jersey limited liability company having its address at 113 Jackson Drive,
Cresskill, New Jersey ("Hades").

         WHEREAS, DualStar desires to engage Hades to provide consulting
services to DualStar on a variety of matters, including, without limitation,
strategic alternatives and planning; and

         WHEREAS, Hades is willing to provide such services on and subject to
the terms and conditions set forth herein.

         NOW, THEREFORE, in consideration of the mutual promises and other good
and valuable consideration, the parties hereto agree as follows:

         1. Subject to the terms and conditions set forth herein, Hades hereby
agrees to provide to DualStar and its subsidiaries consulting services (the
"Services") in connection with DualStar's strategic alternatives and planning,
and DualStar hereby agrees to pay Hades for the Services a sum of $20,000 per
month, payable in advance on the first day of each month during the Term
(defined below), and to reimburse Hades for all out-of-pocket expenses incurred
by Hades and its personnel in furtherance of performing the Services.

         3. All personnel assigned by Hades to perform Services will be
principals, employees or contractors (collectively, "personnel") of Hades and
Hades will pay all salaries and expenses of, any applicable federal, social
security, federal and state unemployment taxes, and any other payroll or
withholding taxes relating to such employees. Hades will be considered, for all
purposes, an independent contractor, and its will not, directly or indirectly,
act as an agent, servant or employee of DualStar.

         4. This Consulting Agreement will be effective from the date hereof and
will terminate on June 1, 2003, at which time it may be renewed, extended or
modified by a written agreement signed by both parties hereto.

         5. Hades agrees that the Services to be provided hereunder will be
performed by qualified, careful and efficient personnel in strict conformity
with the best practices and highest applicable standards. Hades is responsible
for the direct management and supervision of its personnel.

         6. Hades agrees not to use or disclose to anyone other than employees,
principals, consultants attorneys and other professionals of Hades who have
acknowledged this confidentiality covenant and agree in writing to be bound by
it, during the terms of this Consulting Agreement and for a period of two (2)
years following the

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                                       2

termination hereof, any Confidential Information (defined below). For purposes
of this Consulting Agreement, "Confidential Information: is (a) information
contained in any materials delivered to Hades pursuant to this Consulting
Agreement, and (b) information which relates to DualStar's business affairs or
that of any of its affiliates, but does not include any information otherwise
made available to Hades in any other capacity apart from this Consulting
Agreement or is otherwise publicly available through no act or failure to act on
the part of Hades. Upon the termination of this Consulting Agreement, Hades
shall deliver to DualStar all Confidential Information and other material in
which DualStar has exclusive rights.

         7. Hades's obligation to perform the Services hereunder shall be
excused without liability when prevented by strike, act of God, governmental
action, accident or any other condition beyond its reasonable control. Hades
agrees to resume performance of Services as soon as practicable following
cessation of such condition.

         8. This Consulting Agreement may be terminated prior to the end of the
Term or any renewal thereof as provided in this Paragraph 8 and the rights and
remedies of the parties upon such termination shall be as set forth in this
Paragraph. Either party (the "Non-defaulting Party") may terminate this
Consulting Agreement upon a material breach of this Consulting Agreement by the
other party (the "Defaulting Party") if such material breach is not cured by the
Defaulting Party within fifteen (15) days of its receipt of written notice
regarding such breach from the Non-defaulting Party. Other than termination as a
result of a material breach by Hades, DualStar may terminate this Consulting
Agreement only by giving written notice to Hades of DualStar's intention to
terminate this Consulting Agreement accompanied by payment of (i) all unpaid
amounts due hereunder from DualStar to Hades for Services rendered through the
date of termination, plus all reimbursable amounts for which Hades has delivered
to DualStar an invoice on or before the termination date, (ii) $25,000, which
will be used by Hades for reimbursable expenses incurred prior to the
termination date and not yet invoiced, and (iii) an amount equal to the product
of $20,000 times the greater of (A) the number of months remaining in the Term
hereof, and (B) 24. Not later than 60 days following the termination date, Hades
shall provide DualStar with an itemized invoice for reimbursable expenses
incurred by Hades prior to the termination date. To the extent that the $25,000
payment contemplated by clause (ii) above exceeds such invoiced amount, Hades
will remit the difference to DualStar with the itemized invoice. To the extent
that the $25,000 payment contemplated by clause (ii) above is less than the
invoiced amount, DualStar will remit such difference to Hades within 30 days
following receipt of the itemized invoice.

         9. DualStar shall not in any action or proceeding, or otherwise, assert
any claim for consequential damages against Hades on account of any loss, cost,
damage or expense which DualStar may suffer or incur because of any act or
omission of Hades or its employees in the performance of the Services, and
DualStar hereby expressly waives all such claims.

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         10. This Consulting Agreement may not be assigned by either party
without the prior written consent of the other party.

         11. This Consulting Agreement will be governed in all respects by the
law of the State of Delaware.

         12. This Consulting Agreement may be amended only by an instrument in
writing executed by the parties or their permitted assignees.

         13. All notices pursuant to this Consulting Agreement shall be in
writing, and hand delivered or mailed by first class mail, postage prepaid, or
sent via facsimile to the attention of the person listed below and to the party
intended as the recipient thereof at the address of such party set forth below,
or at such other address or to the attention of such other person as such party
shall have designated for such purpose in a written notice complying as to
delivery with the terms of this Paragraph.

             If to Hades:     Hades Advisors LLC
                              113 Jackson Drive
                              Cresskill, New Jersey
                              Fax: (201) 568-6624

             If to DualStar:  DualStar Technologies Corporation
                              1 Park Avenue
                              New York, New York 10016
                              Attention:  President and Chief Executive Officer
                              Fax: (212) 616-6254

         14. Failure by either party at any time to require performance by the
other party or to claim a breach of any provision of this Consulting Agreement
will not be construed as a waiver of any right accruing under this Consulting
Agreement, nor affect any subsequent breach, nor affect the effectiveness of
this Agreement or any part hereof, nor prejudice either party as regards any
subsequent action.

         15. This Consulting Agreement constitutes the entire agreement between
Hades and DualStar with respect to the subject matter hereof and no
representation or statement not contained in the main body of this Agreement
shall be binding upon DualStar or Hades as a warranty or otherwise.

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         IN WITNESS WHEREOF, the parties hereto have respectively caused this
Consulting Agreement to be executed by their duly authorized signatories as of
the day and year first above written.

DUALSTAR TECHONOLOGIES CORPORATION

By: /s/
    --------------------------------------------
    Name:  Gregory Cuneo
    Title: President and Chief Executive Officer

HADES ADVISORS LLC

By: /s/
    --------------------------------------------
    Name:
    Title:<PAGE>

                    REGISTRATION RIGHTS AND LOCK-UP AGREEMENT

     THIS REGISTRATION RIGHTS AND LOCK-UP AGREEMENT (this "Agreement") is made
and entered into as of this 10th day of May, 2000, by and among DualStar
Technologies Corporation, a Delaware corporation (the "Company"), and the
stockholders listed on Schedule I hereto.

                              W I T N E S S E T H:

     WHEREAS, the Company has entered into an Agreement and Plan of Merger (the
"Merger Agreement") with DCI Acquisition Co., a wholly-owned subsidiary of the
Company ("MergerCo"), and Paracomm, Inc. ("Target"), pursuant to which MergerCo
shall merge with and into Target (the "Merger"), with Target being the surviving
corporation in the Merger and thereby becoming a wholly-owned subsidiary of the
Company; and

     WHEREAS, pursuant to the Merger Agreement, the Company has agreed to issue
to the former stockholders of Target (the "Stockholders"), those shares of
Common Stock and those Warrants set forth opposite such Stockholders' names on
Schedule I hereto; and

     WHEREAS, pursuant to the Merger Agreement, the Company has agreed to grant
to the Stockholders certain registration rights in respect of, and the
Stockholders are to agree to certain restrictions on transfer of, the Common
Stock set forth on Schedule I hereto and the Common Stock issuable to the
Stockholders upon exercise of the Warrants set forth on Schedule I hereto,
pursuant to the terms and provisions of this Agreement.

     NOW, THEREFORE, in consideration of the premises and of the mutual
covenants and agreements hereinafter set forth, and for other consideration, the
receipt and sufficiency of which are hereby acknowledged, it is hereby
covenanted and agreed as follows:

                                   ARTICLE 1

                                   DEFINITIONS

     As used herein, the following terms shall have the respective meanings
following such term:

     AFFILIATE shall mean, as to any Stockholder, (i) the partners, retired
partners, members, retired members, directors and officers, as the case may be,
of such Stockholder, (ii) the partners or members of any of the parties referred
to in the foregoing

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clause of this definition, (iii) the spouse or lineal descendants of such
Stockholder or any of the parties referred to in the foregoing clauses of this
definition, (iv) a trust for the benefit of such Stockholder or any of the
parties referred to in the foregoing clauses of this definition, (v) any
corporation, limited liability company or partnership controlled by such
Stockholder or by any of the parties referred to in the foregoing clauses of
this definition, and (vi) any other party that directly, or indirectly through
one or more intermediaries, controls, or is controlled by, or is under common
control with, any Stockholder.

     AGENT shall have the meaning set forth in Section 5.1 hereof.

     AGREEMENT shall have the meaning set forth in the introductory paragraph
hereof.

     BLACKACRE PARTIES shall have the meaning set forth in Section 2.1(b)
hereof.

     COMMON STOCK shall mean the Company's common stock, par value $.01 per
share.

     COMMISSION shall mean the Securities and Exchange Commission or any other
federal agency at the time administering the Securities Act.

     COMPANY shall have the meaning set forth in the introductory paragraph
hereof.

     DISPOSE and DISPOSITION shall have the meanings set forth in Section 3.1
hereof.

     EQUITY SECURITY shall mean any capital stock (including the Common Stock)
of the Company, whether now authorized or not, and rights, options, warrants or
rights to purchase capital stock, and securities of any type whatsoever that
are, or may become, convertible into capital stock; the number of shares of an
Equity Security which is a convertible security shall be the number of shares of
such Equity Security which would result upon the immediate conversion of such
convertible security, without regard to when such convertible security may in
fact be converted.

     ESCROW AGREEMENT shall mean that certain Escrow Agreement of even date
herewith, relating to the hold back escrow provided for in the Merger Agreement,
among the Company, the Agent and the escrow agent provided for therein, in its
capacity as the escrow agent thereunder.

     EXCHANGE ACT shall mean the Securities Exchange Act of 1934, as amended,
and any successor statute thereto.

     GROUP shall mean:

                 (i) in the case of any Stockholder who is an individual, such
                 Stockholder and any Affiliate of such Stockholder;

                 (ii) in the case of any Stockholder which is a partnership, (A)
                 such partnership and any of its limited or general partners,
                 (B) any

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                 corporation or other business organization to which such
                 partnership shall sell all or substantially all of its assets
                 or with which it shall be merged or consolidated and (C) any
                 Affiliate of such partnership;

                 (iii) in the case of any Stockholder which is a corporation,
                 (A) such corporation, its parent and any of such corporation's
                 or parent's subsidiaries, (B) any corporation or other business
                 organization to which such corporation shall sell all or
                 substantially all of its assets or with which it shall be
                 merged, and (C) any Affiliate of such corporation; and

                 (iv) in the case of any Stockholder which is a limited
                 liability company, (A) such limited liability company and any
                 of its members, (B) any corporation or other business
                 organization to which such limited liability company shall sell
                 all or substantially all of its assets or with which it shall
                 be merged or consolidated and (C) any Affiliate of such limited
                 liability company.

     INDEMNIFIED PARTY shall have the meaning set forth in Section 2.4(c)
hereof.

     INDEMNIFYING PARTY shall have the meaning set forth in Section 2.4(c)
hereof.

     LOCK-UP PERIOD shall have the meaning set forth in Section 3.1 hereof.

     MERGER shall have the meaning set forth in the recitals contained herein.

     MERGER AGREEMENT shall have the meaning set forth in the recitals contained
herein.

     OTHER STOCKHOLDERS shall have the meaning set forth in Section 2.1(b)
hereof.

     PERMITTED TRANSFER shall have the meaning set forth in Section 3.1 hereof.

     RESTRICTED SECURITIES shall mean the securities of the Company required to
bear or bearing the legend set forth in Section 3.3 hereof.

     REGISTRABLE SECURITIES shall mean, from time to time, (i) the Common Stock
issued to the Stockholders pursuant to the Merger Agreement, other than shares
of such Common Stock theretofore sold to the public and (ii) any shares of
Common Stock issuable upon exercise of the Warrants.

     The terms "REGISTER," "REGISTERED" and "REGISTRATION" shall refer to a
registration effected by preparing and filing a registration statement in
compliance with the Securities Act and applicable rules and regulations
thereunder, and the effectiveness of such registration statement.

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     REGISTRATION EXPENSES shall mean all expenses incurred by the Company in
compliance with Section 2.1 hereof, including, without limitation, all
registration and filing fees, printing expenses, fees and disbursements of
counsel for the Company and one special counsel for all holders chosen by the
holders of a majority of the securities included in such registration, blue sky
fees and expenses, and the expense of any special audits incident to or required
by any such registration (but excluding the compensation of regular employees of
the Company, which shall be paid in any event by the Company).

     SECURITIES ACT shall mean the Securities Act of l933, as amended, and any
successor statute thereto.

     STOCKHOLDERS shall have the meaning set forth in the recitals contained
herein.

     TARGET shall have the meaning set forth in the recitals contained herein.

     TRANSACTION COMMON STOCK shall have the meaning set forth in Section 3.1
hereof.

     WARRANTS shall mean the Warrants to purchase an aggregate of 25,000 shares
of Common Stock of the Company, issued to the Stockholders pursuant to the
Merger Agreement.

                                    ARTICLE 2

                               REGISTRATION RIGHTS

     SECTION 2.1. COMPANY REGISTRATION.

     (a) Notice of Registration. If the Company shall determine to register any
of its securities either for its own account or the account of a security holder
or holders, other than a registration relating solely to employee benefit plans,
or a registration relating solely to a Commission Rule 145 transaction, or a
registration on any registration form which does not permit secondary sales, the
Company will:

                  (i) promptly give to each Stockholder written notice thereof
                  (which shall include a list of the jurisdictions in which the
                  Company intends to attempt to qualify such securities under
                  the applicable blue sky or other state securities laws); and

                  (ii) include in such registration (and any related
                  qualification under blue sky laws or other compliance), and in
                  any underwriting involved therein, all the Registrable
                  Securities specified in a written request or requests, made by
                  any Stockholder within fifteen (15) days after receipt of the
                  written notice from the Company described in clause (i) above,
                  except as set forth in Section 2.1(b) below.

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     (b) Underwriting. If the registration of which the Company gives notice is
for a registered public offering involving an underwriting, the Company shall so
advise the Stockholders as part of the written notice given pursuant to Section
2.1(a)(i). In such event, the right of any Stockholder to registration pursuant
to Section 2.1 shall be conditioned upon such Stockholder's participation in
such underwriting and the inclusion of such Stockholder's Registrable Securities
in the underwriting to the extent provided herein. All Stockholders proposing to
distribute their securities through such underwriting shall (together with the
Company, directors and officers of the Company and holders of securities of the
Company who are entitled, by contract with the Company, to have securities
included in such registration (the "Other Stockholders") who determine to
distribute their securities through such underwriting) enter into an
underwriting agreement in customary form with the underwriter or underwriters
selected for underwriting by the Company.

     Notwithstanding any other provision of this Section 2.1, if the underwriter
determines that marketing factors require a limitation on the number of shares
to be underwritten, the underwriter may (subject to the allocation priority set
forth below) exclude from such registration and underwriting some or all of the
Registrable Securities which would otherwise be underwritten pursuant hereto.
The Company shall so advise all holders of securities requesting registration,
and the number of shares of securities that are entitled to be included in the
registration and underwriting shall be allocated in the following manner: the
securities of the Company (other than Registrable Securities) held by officers
or directors of the Company and by the Other Stockholders shall be excluded from
such registration to the extent so required by such limitation and if limitation
of the number of shares is still required, the Company shall so advise all
holders of Registrable Securities whose securities would otherwise be
underwritten pursuant hereto, and the number of shares of Registrable Securities
that may be included in the registration and underwriting shall be allocated
among all such Stockholders in proportion, as nearly practicable, to the
respective amounts of Registrable Securities held by such persons at the time of
the filing of the registration statement; provided, however, that,
notwithstanding the foregoing or any other provision to the contrary set forth
in this Agreement, (i) the right of the Stockholders to be included in any such
registration and underwriting shall be subordinate to the registration rights of
Cerberus Capital Management L.P., Blackacre Capital Management L.L.C., Greg
Cuneo, Robert J. Bimbach, Ronald Fregara and Stephen J. Yager (collectively, and
together with their respective successors and assigns, the "Blackacre Parties")
pursuant to any agreement among the Blackacre Parties and the Company in respect
of the registration of any securities of the Company held by the Blackacre
Parties, (ii) the Stockholders shall not have the right to be included in any
registration requested by any of the Blackacre Parties, and (iii) in the event
that the underwriter shall determine to exclude from any registration some or
all of the Registrable Securities as set forth above, the securities of the
Stockholders shall be excluded prior to the exclusion of any securities held by
the Blackacre Parties.

     If any holder of Registrable Securities or any officer, director or Other
Stockholder disapproves of the terms of any such underwriting, such party may
elect to

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withdraw therefrom by written notice to the Company and the underwriter. Any
Registrable Securities or other securities excluded or withdrawn from such
underwriting shall be withdrawn from such registration.

     SECTION 2.2. EXPENSES OF REGISTRATION. The Company shall bear all
Registration Expenses incurred in connection with any registration,
qualification and compliance by the Company pursuant to Section 2.1 hereof. All
underwriting commissions shall be borne by the holders of the securities so
registered pro rata on the basis of the number of their shares so registered.

     SECTION 2.3. REGISTRATION PROCEDURES. In the case of each registration
effected by the Company pursuant to this Article 2, the Company will keep each
Stockholder advised in writing as to the initiation of each registration and as
to the completion thereof. Except as provided in Section 2.3, at its expense,
the Company will:

     (a) keep such registration effective for a period of one hundred eighty
(180) days or until the Stockholder or Stockholders have completed the
distribution described in the registration statement relating thereto, whichever
first occur; provided, however, that such 180-day period shall be extended for a
period of time equal to the period the Stockholder refrains from selling any
securities included in such registration in accordance with the provisions of
Section 2.7 hereof;

     (b) prepare and file with the Commission such amendments and supplements to
such registration statement and the prospectus used in connection with such
registration statement as may be necessary to comply with the provisions of the
Securities Act with respect to the disposition of all securities covered by such
registration statement;

     (c) furnish such number of prospectuses and other documents incident
thereto as a Stockholder from time to time may reasonably request;

     (d) use its best efforts to register or qualify the Registrable Securities
under the securities or blue-sky laws of such jurisdictions as any Stockholder
may request; provided, however, that the Company shall not be obligated to
register or qualify such Registrable Securities in any particular jurisdiction
in which the Company would be required to execute a general consent to service
of process in order to effect such registration, qualification or compliance,
unless the Company is already subject to service in such jurisdiction and except
as may be required by the Securities Act or applicable rules or regulations
thereunder;

     (e) notify each holder of Registrable Securities covered by such
registration statement at any time when a prospectus relating thereto is
required to be delivered under the Securities Act of the happening of any event
as a result of which the prospectus included in such registration statement, as
then in effect, includes an untrue statement of material fact or omits to state
a material fact required to be stated therein or necessary to make the
statements therein not misleading in the light of the circumstances then
existing; and

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     (f) provide a transfer agent and registrar for all Registrable Securities
registered pursuant hereto and a CUSIP number for all such Registrable
Securities, in each case not later than the effective date of such registration.

     SECTION 2.4. INDEMNIFICATION AND CONTRIBUTION.

     (a) The Company, with respect to each registration, qualification and
compliance effected pursuant to this Article 2, will indemnify and hold harmless
each Stockholder, each of its officers, directors and partners, and each party
controlling such Stockholder, and each underwriter, if any, and each party who
controls any underwriter, against all claims, losses, damages and liabilities
(or actions in respect thereof) arising out of or based on any untrue statement
(or alleged untrue statement) of a material fact contained in any prospectus,
offering circular or other document (including any related registration
statement, notification or the like) incident to any such registration,
qualification or compliance, or based on any omission (or alleged omission) to
state therein a material fact required to be stated therein or necessary to make
the statements therein not misleading, or any violation by the Company of the
Securities Act or any rule or regulation thereunder applicable to the Company
and relating to action or inaction required of the Company in connection with
any such registration, qualification or compliance, and will reimburse each such
Stockholder, each of its officers, directors and partners, and each party
controlling such Stockholder, each such underwriter and each party who controls
any such underwriter, for any legal and any other expenses incurred in
connection with investigating or defending any such claim, loss, damage,
liability or action, provided that the Company will not be liable in any such
case to the extent that any such claim, loss, damage, liability or expense
arises out of or is based on any untrue statement or omission based solely upon
written information furnished to the Company by such Stockholder or underwriter,
as the case may be, and stated to be specifically for use therein.

     (b) Each Stockholder and each Other Stockholder will, if Registrable
Securities held by such party are included in the securities as to which such
registration, qualification or compliance is being effected, indemnify and hold
harmless the Company, each of its directors and officers and each underwriter,
if any, of the Company's securities covered by such a registration statement,
each party who controls the Company or such underwriter, each other such
Stockholder and each Other Stockholder and each of their respective officers,
directors and partners, and each party controlling such Stockholder or such
Other Stockholder, against all claims, losses, damages and liabilities (or
actions in respect thereof) arising out of or based on any untrue statement (or
alleged untrue statement) of a material fact contained in any such registration
statement, prospectus, offering circular or other document, or any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, and will reimburse
the Company and such Stockholders, Other Stockholders, directors, officers,
partners, parties, underwriters or control persons for any legal or any other
expenses reasonably incurred in connection with investigating or defending any
such claim, loss, damage, liability or action, in each

                                      -7-

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case to the extent, but only to the extent, that such untrue statement (or
alleged untrue statement) or omission (or alleged omission) is made in such
registration statement, prospectus, offering circular or other document solely
in reliance upon and in conformity with written information furnished to the
Company by such Stockholder or such Other Stockholder and stated to be
specifically for use therein; provided, however, that the obligations of such
Stockholders and such Other Stockholders hereunder shall be limited to an amount
equal to the proceeds to each such Stockholder or Other Stockholder of
securities sold as contemplated herein.

     (c) Each party entitled to indemnification under this Section 2.4 (the
"Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom, provided that counsel for the Indemnifying
Party, who shall conduct the defense of such claim or any litigation resulting
therefrom, shall be approved by the Indemnified Party (whose approval shall not
unreasonably be withheld), and the Indemnified Party may participate in such
defense at such party's expense (unless the Indemnified Party shall have been
advised by counsel that actual or potential differing interests or defenses
exist or may exist between the Indemnifying Party and the Indemnified Party, in
which case such expense shall be paid by the Indemnifying Party), and provided
further that the failure of any Indemnified Party to give notice as provided
herein shall not relieve the Indemnifying Party of its obligations under this
Article 2. No Indemnifying Party, in the defense of any such claim or
litigation, shall, except with the consent of each Indemnified Party, consent to
entry of any judgment or enter into any settlement which does not include as an
unconditional term thereof the giving by the claimant or plaintiff to such
Indemnified Party of a release from all liability in respect to such claim or
litigation.

     (d) In order to provide for just and equitable contribution to joint
liability under the Securities Act in any case in which either (i) any holder of
Restricted Securities exercising rights under this Agreement, or any controlling
person of any such holder, makes a claim for indemnification pursuant to this
Section 2.4 but it is judicially determined (by the entry of a final judgment or
decree by a court of competent jurisdiction and the expiration of time to appeal
or the denial of the last right of appeal) that such indemnification may not be
enforced in such case notwithstanding the fact that this Section 2.4 provides
for indemnification in such case, or (ii) contribution under the Securities Act
may be required on the part of any such selling holder or any such controlling
person in circumstances for which indemnification is provided under this Section
2.4; then, and in each such case, the Company and such holder will contribute to
the aggregate losses, claims, damages or liabilities to which they may be
subject (after contribution from others) in such proportion so that such holder
is responsible for the portion represented by the percentage that the public
offering price of its Restricted Securities offered by the registration
statement bears to the public offering price of all securities offered by such
registration statement, and the Company is responsible for the remaining
portion; provided, however, that, in any such case, (A) no such holder will be
required to contribute any amount in excess of the public offering price of all
such

                                      -8-
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Restricted Securities offered by it pursuant to such registration statement; and
(B) no person or entity guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) will be entitled to contribution
from any person or entity who was not guilty of such fraudulent
misrepresentation.

     SECTION 2.5. INFORMATION BY HOLDERS. Each holder of Registrable Securities,
and each Other Stockholder holding securities included in any registration,
shall furnish to the Company such information regarding such holder of
Registrable Securities or such Other Stockholder as the Company may reasonably
request in writing and as shall be reasonably required in connection with any
registration, qualification or compliance referred to in this Article 2.

     SECTION 2.6. RULE 144 REPORTING. With a view to making available the
benefits of certain rules and regulations of the Commission which may permit the
sale of the Restricted Securities to the public without registration, the
Company agrees to:

     (a) Make and keep public information available, as those terms are
understood and defined in Rule 144 under the Securities Act;

     (b) Use its best efforts to file with the Commission in a timely manner all
reports and other documents required of the Company under the Securities Act and
the Exchange Act at any time after it has become subject to such reporting
requirements; and

     (c) So long as a Stockholder owns any Restricted Securities, furnish to
such Stockholder forthwith upon request a written statement by the Company as to
its compliance with the reporting requirements of Rule 144 and of the Securities
Act and the Exchange Act, a copy of the most recent annual or quarterly report
of the Company, and such other reports and documents so filed as a Stockholder
may reasonably request in availing itself of any rule or regulation of the
Commission allowing a Stockholder to sell any such securities without
registration.

     SECTION 2.7. "MARKET STAND-OFF" AGREEMENT. Each Stockholder whose shares
are included in a registration statement pursuant to this Agreement agrees, if
requested by the Company and an underwriter of Common Stock (or other
securities) of the Company, not to sell or otherwise transfer or dispose of any
Common Stock (or other securities) of the Company received pursuant to the
Merger during the sixty (60) day period following the effective date of such
registration statement of the Company filed under the Securities Act, provided
that: all Stockholders whose shares are included in such registration statement,
Other Stockholders and officers and directors of the Company enter into similar
agreements. Such agreement shall be in writing in a form satisfactory to the
Company and such underwriter. The Company may impose stop-transfer instructions
with respect to the shares (or securities) subject to the foregoing restriction
until the end of said sixty (60)-day period.

                                      -9-
<PAGE>

                                   ARTICLE 3

                                LOCK-UP AGREEMENT

     SECTION 3.1. DISPOSITIONS BY STOCKHOLDERS. In order to induce the Company
to enter into the Merger Agreement and to proceed with the Transactions (as such
term is defined in the Merger Agreement), each of the Stockholders agrees, for
the benefit of all parties hereto, that such Stockholder will not, without the
prior written consent of the Company, directly or indirectly, offer, offer to
sell, sell, loan, pledge, grant any rights, contract to sell or grant any option
to purchase or otherwise dispose or transfer (collectively, "Dispose," or a
"Disposition"), other than in the case of a Permitted Transfer, (i) any shares
of Common Stock received pursuant to the Merger, or (ii) the Warrants or shares
of Common Stock issued upon exercise thereof (collectively "Transaction Common
Stock") owned (within the meaning of Rule 13d-3 under the Exchange Act) by such
Stockholder upon consummation of the Transactions, for a period commencing on
the date hereof and ending one (1) year subsequent to the Effective Time (as
defined in the Merger Agreement) (the "Lock-Up Period"). "Permitted Transfers"
shall mean any Disposition (1) to an Affiliate of the Stockholder, which
Affiliate shall agree to be bound by, and shall have the benefits of this
Agreement; (2) to a purchaser of more than a majority of the outstanding Common
Stock of the Company in a transaction recommended by the Board of Directors of
the Company; or (3) pursuant to a merger or tender offer in a transaction
recommended by the Board of Directors.

     The foregoing restrictions are expressly intended to preclude the
Stockholders from engaging in any hedging or other transaction which is designed
to or is reasonably expected to lead to or result in a Disposition of
Transaction Common Stock during the Lock-Up Period even if such securities would
be Disposed of by someone other than a Stockholder. Such prohibited hedging or
other transactions include without limitation any short sale against the box or
any purchase, sale or grant of any right (including without limitation any put
or call option) with respect to any Transaction Common Stock.

     SECTION 3.2. INEFFECTIVE DISPOSITIONS; STOP TRANSFER ORDER. Any Disposition
of Common Stock or Other Securities which is made in any manner contrary to the
provisions of this Agreement shall be void and shall not be effective to
constitute the transferee as a stockholder of the Company entitled to any
rights, benefits, and privileges as such. Each of the Stockholders hereby agrees
and consents to the entry of stop transfer instructions with the Company's
transfer agent against the transfer of the Common Stock or Other Securities held
by the undersigned except those transferred in compliance with this Agreement.

     SECTION 3.3. LEGEND. Each certificate of Common Stock and certificates
representing Other Securities of the Company held by a Stockholder, shall be
stamped or otherwise have endorsed or imprinted thereon a legend in
substantially the following form:

         "The transfer of the shares represented by this certificate are subject
         until May 10, 2001, to the terms and conditions of a Registration
         Rights and

                                      -10-

<PAGE>

         Lock-Up Agreement, dated as of May 10, 2000, (a copy of which is on
         file with the Company), as the same may be amended from time to time,
         and no transfer of the shares represented hereby or of shares issued in
         exchange therefor shall be valid or effective unless the terms and
         conditions of such Agreement have been fulfilled."

                                   ARTICLE 4

                     COMPANY REPRESENTATIONS AND WARRANTIES

     The Company represents and warrants to each of the Stockholders as follows:

     SECTION 4.1. ORGANIZATION OF THE COMPANY; AUTHORITY. The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and has the corporate power and authority to own or
lease all of its properties and assets and to carry on its business as it is now
being conducted. The Board of Directors of the Company has authorized and
approved the transactions contemplated by this Agreement, and the Company has
the corporate power and is duly authorized to enter into this Agreement and all
ancillary agreements, and to carry out the transactions, contemplated hereby.
This Agreement has been duly executed and delivered by the Company and
constitutes the legal, valid, and binding obligation of the Company, enforceable
against the Company in accordance with its terms.

     SECTION 4.2. NONCONTRAVENTION. Neither the execution and delivery of this
Agreement by the Company, nor the consummation by the Company of the
transactions contemplated hereby, will constitute a violation of, or be in
conflict with, or constitute or create a default under, or result in the
creation or imposition of any lien upon any property of the Company pursuant to
(a) the charter documents or bylaws of the Company, each as amended to date; (b)
any agreement or commitment to which the Company is a party or by which the
Company or any of its properties or assets is bound, or to which the Company or
any of such properties or assets is subject; or (c) any statute, judgment,
decree, order, regulation, or rule of any court or governmental authority
applicable to the Company.

     SECTION 4.3. LITIGATION, ETC. There is no claim, action, suit, proceeding,
or investigation pending or to the Company's knowledge threatened, relating to
or affecting any of the activities of the Company, or which questions the
validity of this Agreement or challenges any of the transactions contemplated
hereby.

                                   ARTICLE 5

                              APPOINTMENT OF AGENT

     SECTION 5.1. STOCKHOLDER AGENT; POWER OF ATTORNEY. Each of the Stockholders
hereby appoints and constitutes Philip Dropkin (the "Agent") as agent and
attorney-in-fact for the Stockholders, for and on behalf of the Stockholders, to
give and receive notices and communications hereunder and to act pursuant to the
Merger

                                      -11-
<PAGE>

Agreement, to execute and deliver the Escrow Agreement and to take all actions
necessary or appropriate in the judgment of the Agent for the accomplishment of
any of the foregoing, including, without limitation, to settle, arbitrate and
adjudicate claims relating to the stock consideration adjustment provided for in
the Merger Agreement or claims for indemnification thereunder, and to amend this
Agreement, the Merger Agreement and any other agreement or instrument
contemplated thereby. Such agency may be changed by the Stockholders from time
to time upon not less than ten (10) days prior written notice to the Company;
provided that the Agent may not be removed unless the holders of a majority of
the merger consideration provided for in the Merger Agreement agree to such
removal and to the identity of the substituted agent. No bond shall be required
of the Agent, and the Agent shall receive no compensation for his services.
Notices or communications to or from the Agent shall constitute notice to or
from each of the Stockholders.

     SECTION 5.2. INDEMNIFICATION OF AGENT. The Agent shall not be liable for
any act done or omitted hereunder or pursuant to the Merger Agreement as Agent
while acting in good faith and in the manner he believes to be in or not opposed
to the best interests of the Stockholders. The Stockholders shall jointly and
severally indemnify the Agent and hold the Agent harmless against any loss,
liability or expense incurred without gross negligence or bad faith on the part
of the Agent and arising out of or in connection with the acceptance or
administration of the Agent's duties hereunder and pursuant to the Merger
Agreement, provided, however, that the Company shall pay the reasonable fees and
expenses of any legal counsel retained by the Agent solely in connection with
the administration of his duties as Agent hereunder and thereunder; and
provided, further that, upon the expiration of the Hold Back Period (as such
term is defined in the Merger Agreement), the balance, if any, of the Hold Back
Escrow (as such term is defined in the Merger Agreement) shall be used by the
Stockholders to reimburse the Agent for any additional expenses incurred thereby
in connection with the administration of his duties as Agent, or may be retained
by the Agent, in his discretion, to pay any outstanding expenses or reasonably
anticipated future expenses in connection therewith. A decision, act, consent or
instruction of the Agent shall constitute a decision of all the Stockholders,
and shall be final, binding and conclusive upon each of the Stockholders, and
the Company may each rely upon any decision, act, consent or instruction of the
Agent as being the decision, act, consent or instruction of each and all of the
Stockholders. The Company is hereby relieved from any liability to any person
for any acts done by it in accordance with such decision, act, consent or
instruction of the Agent.

     SECTION 5.3. AGREEMENT AMONG STOCKHOLDERS AS TO SHARE OF AMOUNTS PAYABLE
UNDER MERGER AGREEMENT. The Stockholders agree with each other that 10% of each
Stockholder's Stock Consideration (as such term is defined in the Merger
Agreement) shall be deposited in the Hold Back Escrow pursuant to the Escrow
Agreement and that each such Stockholder shall pay, in proportion to its share,
any amounts required under the Merger Agreement or related documents to be paid
by the Stockholders other than from the Hold Back Escrow, including, without
limitation, all expenses or amounts so payable under Sections 4.5 or 9.2 of the
Merger Agreement.

                                      -12-

<PAGE>

                                   ARTICLE 6

                            MISCELLANEOUS PROVISIONS

     SECTION 6.1. ASSIGNMENT OF RIGHTS. The provisions of this Agreement shall
be binding upon and inure to the benefit of any successor or permitted assign of
any party hereto.

     SECTION 6.2. DURATION OF AGREEMENT. Unless sooner terminated in accordance
with the provisions of this Agreement, the rights and obligations of each
Stockholder under this Agreement shall terminate as to such Stockholder when the
Group of which it is a member has transferred all Equity Securities owned by
such Group in accordance with this Agreement.

     SECTION 6.3. ENFORCEMENT. The parties hereto agree that the remedy at law
for any breach of this Agreement is inadequate and that should any dispute arise
concerning any matter hereunder, this Agreement shall be enforceable in a court
of equity by an injunction or a decree of specific performance. Such remedies
shall, however, be cumulative and not exclusive, and shall be in addition to any
other remedies which the parties hereto may have.

     SECTION 6.4. SEVERABILITY OF PROVISIONS. If any one or more provisions of
this Agreement shall be declared invalid or unenforceable, the same shall not
affect the validity or enforceability of any other provisions of this Agreement.

     SECTION 6.5. AMENDMENTS. Neither this Agreement nor any term hereof may be
amended, waived, discharged, or terminated, except by written instrument signed
by the Company and Stockholders holding greater than sixty-six and two-thirds
percent (66 2/3%) of the voting Equity Securities issued pursuant to the Merger
held by the Stockholders; provided, however, that (i) Article 5 may not be
amended without the consent of the Agent; and (ii) the obligations of any
Stockholder may not be increased without the consent of such Stockholder.

     SECTION 6.6. NOTICES.

     (a) All notices and other communications required or permitted hereunder
shall be in writing and shall be mailed by registered or certified mail, postage
prepaid, or delivered either by hand or by messenger, or sent via facsimile,
computer mail or other electronic means, addressed (i) if to a Stockholder, to
the attention of the Agent, c/o Walter F. Garigliano, 265 Broadway, P.O. Drawer
1069, Monticello, New York 12701-1069, Fax: (914) 796-1040, with a copy, which
shall not constitute notice, to Paul A. Gajer, Esq., RubinBaum LLP, 30
Rockefeller Plaza, New York, New York 10112, Fax: (212) 698-7825, or (ii) if to
the Company, One Park Avenue, New York, New York 10016, or at such other address
as the Company shall have furnished in writing to the party initiating the
notice or communication.

                                      -13-
<PAGE>

     (b) Any notice or other communications so addressed and mailed, postage
prepaid, by registered or certified mail (in each case, with return receipt
requested) shall be deemed to be delivered and given when so mailed. Any notice
so addressed and otherwise delivered shall be deemed to be given when actually
received by the addressee.

     SECTION 6.7. GOVERNING LAW. This Agreement shall be construed in accordance
with, and the rights of the parties shall be governed by, the law of the State
of New York, without regard to its conflicts of law provisions.

     SECTION 6.8. COUNTERPARTS. This Agreement may be executed in counterparts,
each of which when so executed and delivered shall constitute a complete and
original instrument but all of which together shall constitute one and the same
agreement, and it shall not be necessary when making proof of this Agreement or
any counterpart thereof to account for any other counterpart.

       [BALANCE OF PAGE INTENTIONALLY LEFT BLANK; SIGNATURE PAGES FOLLOW.]

                                      -14-
<PAGE>

     IN WITNESS WHEREOF, each party hereto has caused this Agreement to be
signed by its duly authorized officer or partner, as the case may be, as of the
date and year first above written.

                                       DUALSTAR TECHNOLOGIES CORPORATION

                                       By: /s/
                                          -----------------------------------
                                          Name:
                                          Title:

                                       STOCKHOLDERS:
                                       /s/
                                       --------------------------------------
                                       Philip Dropkin
                                       /s/
                                       --------------------------------------
                                       Heather Johnson
                                       /s/
                                       --------------------------------------
                                       Mark Mayhook
                                       /s/
                                       --------------------------------------
                                       Fran Reiff
                                       /s/
                                       --------------------------------------
                                       Donald Johnson
                                       /s/
                                       --------------------------------------
                                       Joseph Kubisak
                                       /s/
                                       --------------------------------------
                                       Mark Kubisak

<PAGE>

                                       GENEVA ASSOCIATES MERCHANT
                                       BANKING PARTNERS I, LLC

                                       By:/s/
                                          -----------------------------------
                                          Name:
                                          Title:
                                       /s/
                                       --------------------------------------
                                       Rod Cornelius
                                       /s/
                                       --------------------------------------
                                       Walter Garigliano

                                       RB PARACOMM

                                       By: /s/
                                          -----------------------------------
                                          Name:
                                          Title:
                                       /s/
                                       --------------------------------------
                                       Brian Pfeifler
                                       /s/
                                       --------------------------------------
                                       Paul Izler

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