Document:

<PAGE>

                            SHARE PURCHASE AGREEMENT

                               DATED 8TH MAY, 2000

                            DENISON INTERNATIONAL PLC

                                       and

                                 ING BARINGS LLC

                     ---------------------------------------

                          CONTINGENT PURCHASE CONTRACT
                       FOR THE PURCHASE OF UP TO 1,111,395
                          SHARES OF US$0.01 EACH IN THE
                      CAPITAL OF DENISON INTERNATIONAL plc

                    ----------------------------------------

                                  ALLEN & OVERY
                                     LONDON
                                   CO:703948.1

<PAGE>

                                    Page Two

THIS AGREEMENT is made on  May 8, 2000

BETWEEN:

(1) DENISON INTERNATIONAL PLC (registered number 2798239) whose registered
    office is at Masters House, 107 Hammersmith Road, London W14 OQH (the
    "COMPANY"); and

(2) ING BARINGS LLC whose US offices are located at 55 E. 52nd Street, New York,
    NY 10055 (the "VENDOR").

WHEREAS:

(A) The Company is a public company limited by shares having an authorized share
    capital of (pound)57,000 divided into 7,125 "A" Ordinary Shares of (pound)8
    each ("Ordinary Shares") and US$150,000 divided into 15,000,000 Ordinary
    Shares of US$0.01 each ("$ Shares") of which 7,015 Ordinary Shares and
    11,113,950 $ Shares have been issued fully paid or credited as fully paid.

(B) Pursuant to and in accordance with the terms of the Amended and Restated
    Restricted Deposit Agreement dated 4th August 1997 between inter alia the
    Company and Bankers Trust Company, a bank organized under the laws of the
    State of New York (the "Deposit Agreement" and "Depositary" respectively),
    the 11,113,950 issued $ Shares (such shares being referred to in the Deposit
    Agreement as "Restricted American Depositary Shares ("ADS's")) are held by
    the Depositary in the form of share warrants to bearer, the beneficial
    ownership of which being evidenced by the issue by the Depositary of
    American Depositary Receipts ("ADR's") on the basis of one ADR for every one
    ADS held.

(C) Subject to the conditions in clause 1 below, the Company wishes to purchase,
    and the Vendor wishes to sell up to 1,111,395 of such $ Shares on the terms
    and conditions set out below.

(D) The Company is authorized to purchase its own shares pursuant to article 11
    of the Company's articles of association.

(E) A copy of this agreement has been available for inspection by the members of
    the Company at its registered office for not less than 15 days ending with
    8th May, 2000 and was similarly available at the annual general meeting of
    the Company held on that date at which the terms of this agreement were
    authorized by special resolution of the Company in accordance with section
    164 of the Companies Act 1985 (the "Act").

(F) The consideration for the purchase of any of the $ Shares is proposed to be
    provided out of the distributable profits of the Company.

IT IS AGREED as follows:

1.  CONDITIONS PRECEDENT

    Each sale and purchase of any of the $ Shares is conditional on:

    (a)  the Company having notified the Vendor at any time prior to 31st
         October, 2001 by one or more notices (in the form set out in Appendix
         1) that it wishes to purchase up to a specified number of $ Shares and
         the price or the range of prices and a maximum price at or within which
         the Vendor shall acquire the ADRs representing such shares; and

<PAGE>

                                   Page Three

    (b)  following receipt by the Vendor of any notice pursuant to paragraph (a)
         above, the Vendor having notified the Company at any time prior to 7th
         November, 2001 by one or more notices (in the form set out in Appendix
         2) ("Vendor's Notice") that it has acquired a specified number of ADRs
         (the "Sale ADRs") in accordance with paragraph (a) above and that
         pursuant to and in accordance with the relevant provisions of the
         Deposit Agreement, such ADRs have been surrendered to the Depositary
         and that the Vendor is the holder of share warrants to bearer in
         respect of a specified number of $ Shares (the "Sale Shares").

2.  SALE AND PURCHASE

    Subject to the satisfaction of the conditions in clause 1, the Vendor shall
    acquire as an agent for the Company, and the Company shall be obligated to
    purchase, the Sale Shares at an aggregate price, payable in cash in US
    dollars, equal to the aggregate of (i) the consideration paid by the Vendor
    for the Sale ADRs, (ii) an commission-equivalent markup of US $.03 per share
    and (iii) a conversion fee of US $.05 per share (together, the "Purchase
    Price").

3.  WARRANTIES AND COVENANTS

(1) The Vendor warrants that as at completion of each purchase of Sale Shares
    (as referred to in clause 4 below) the Company will be the beneficial owner
    of the number of Sale Shares specified in the relevant Vendor's Notice and
    that such Sale Shares will be free from any lien, charge or encumbrance.

(2) The Vendor covenants that all purchases of Sale ADRs by it hereunder shall
    be made in accordance with all applicable US securities laws, including but
    not limited to Regulation M and the safe harbor afforded by Rule 10b-18
    under the US Securities Exchange Act of 1934, as amended.

(3) Each party warrants to the other that this Agreement has been duly
    authorized, executed and delivered by such Party, and constitutes the legal,
    valid and binding obligation of such Party, enforceable against it in
    accordance with its terms. The Company warrants that it will notify the
    Vendor immediately of any "blackout" periods during which the Company would
    be precluded, for any reason, from purchasing shares under this agreement.
    Such notice shall be sent as provided for in clause 6 below.

4.  COMPLETION

(1) Completion of each sale and purchase of the Sale Shares shall be effected on
    the business day next following receipt by the Company of the relevant
    Vendor's Notice, by:

    (a)  the Company paying to the Vendor the Purchase Price.

(2) At a place and time to be agreed between the Company and the Vendor, Vendor
    shall deliver to the Company the share warrants to bearer representing the
    Sale Shares referred to in the Vendor Notice.

(3) As soon as is reasonably practicable after completion the Company shall (if
    applicable) alter its register of members so as to show that the relevant
    Sale Shares have been cancelled in accordance with section 160(4) of the
    Act.

5.  COSTS

    Each of the Company and the Vendor shall bear all professional costs and
    charges relating to this agreement respectively incurred by them and the
    Company shall also pay all stamp duties, custodial charges and delivery
    charges falling due in respect of the completion of the purchase of the Sale
    Shares in accordance with this agreement.

<PAGE>

                                   Page Four

6.  SERVICE OF NOTICES

    Any notice to be served under this agreement shall be validly served if
    delivered or if sent by first class post, recorded delivery post or
    facsimile process if addressed to the Company at its US Executive Offices
    located at 14249 Industrial Parkway, Marysville, Ohio 43040, Attention:
    Chief Financial Officer (facsimile number 937-644-0827) or, if addressed to
    the vendor to ING Barings LLC at 55 E. 52nd Street, New York, NY
    10055,Aattention Michael C. Brown, Managing Director (facsimile number
    212-409-5059) with a copy to Ralph Martinez, Director (facsimile number
    404-364-5255) . Any notice shall be deemed to have been served:

    (a)  if delivered, at the time of delivery;

    (b)  if posted, on the third business day after it was put in the post; or

    (c)  if sent by facsimile process at the expiration of two hours after the
         time of dispatch.

7.  TERMINATION

    This agreement shall terminate on 7th November, 2001 (the "Termination
    Date") as from which date neither of the parties will have any rights,
    liabilities or obligations under this agreement save in respect of any
    Vendor's Notice received or deemed received by the Company prior to the
    Termination Date.

8.  GENERAL

(1) The headings in this agreement are for convenience only and shall not affect
    its construction.

(2) This agreement is governed by and shall be construed in accordance with the
    laws of England and Wales.

AS WITNESS the hands of the duly authorized representatives of the parties on
the date, which appears first on page 1.

SIGNED by J. Colin Keith, Chairman               /s/ J. Colin Keith
For and on behalf of                             -------------------------------
DENISON INTERNATIONAL plc

SIGNED by Michael C. Brown, Managing Director    /s/ Michael C. Brown
for and on behalf of                             -------------------------------
ING BARINGS LLC

<PAGE>

                                   APPENDIX 1

To: ING Barings LLC
    55 E. 52nd Street
    New York, NY  10055
    Attn: Michael C. Brown, Managing Director

Pursuant to clause 1(a) of the Contingent Purchase Contract made between us and
dated 8th May, 2000 (the "Contract"), we hereby notify you that:

1.  We wish to purchase up to [              ] $ Shares as defined in, and on
    the terms and subject to the conditions of, the Contract;

2.  All purchases of $ Shares shall be made in accordance with all applicable US
    securities laws, including but not limited to Regulation M and the safe
    harbor afforded by Rule 10b-18 under the US Securities Exchange Act of 1934,
    as amended; and

3.  The maximum price which you may purchase ADRs representing $ Shares shall be
    US$[       ] per ADR.

Dated:

Signed: .....................................
         A duly authorized director
         for and on behalf of
         Denison International plc

<PAGE>

                                   APPENDIX 2

To: The Directors
    Denison International plc
    Masters House
    107 Hammersmith Road
    London  W14 0QH
    England

Pursuant to clause 1(b) of the Contingent Purchase Contract made between us and
dated 8th May, 2000 (the "Contract"), we hereby notify you as follows:

1.  We have acquired [           ] ADRs representing [           ] Sale Shares,
    as defined in the Contract at a price or prices and on the dates specified
    below.

    Date(s) ADR(s)     Price paid     No. of ADRs     Total purchase price
    Purchased          per ADR $      purchased

    [            ]     [        ]     [         ]      [                 ]

2.  Pursuant to and in accordance with the relevant provisions of the Deposit
    Agreement (as so defined) we have surrendered the above-mentioned ADRs to
    the Depositary and that we are the holder of a share warrant to bearer in
    respect of [            ] $ Shares.

Dated:

Signed:  ....................................
         A duly authorized signatory
         for and on behalf of ING Barings LLC<PAGE>

                                                                  Execution Copy

                             STOCKHOLDERS AGREEMENT

     STOCKHOLDERS AGREEMENT (the "Agreement") made the 28th day of March, 2000
by and among DUALSTAR TECHNOLOGIES CORPORATION, a Delaware corporation (the
"Company"), and BLACKACRE CAPITAL MANAGEMENT L.L.C. and CERBERUS CAPITAL
MANAGEMENT, L.P. on behalf of various funds and accounts (collectively,
"Blackacre"), and Gregory Cuneo and Robert J. Birnbach (such persons or
entities, each of which is listed on Schedule "A" hereto, are hereinafter
referred to individually as a "Stockholder" or collectively as the
"Stockholders", unless otherwise individually named).

     WHEREAS, the Stockholders are stockholders, or may hereafter become
stockholders upon conversion or exercise of outstanding securities, of the
Company, and the Stockholders desire to make certain arrangements among
themselves and with the Company.

     NOW, THEREFORE, in consideration of the foregoing premise and the covenants
and agreements contained herein, the parties agree as follows:

     1. Nomination of Directors. Commencing with the 1999 Annual Meeting of
Stockholders of the Company (to be held in early 2000), and at each stockholders
meeting thereafter at which directors of the Company are to be elected, for so
long as Blackacre beneficially owns shares of Stock representing (or securities
convertible into or exercisable for) at least twenty percent (20%) of the Stock
of the Company outstanding on a fully-diluted basis, the Company shall recommend
to shareholders of the Company for election as Directors of the Company, that
number of persons designated by Blackacre as shall constitute a simple majority
of the Board as then constituted (the "Blackacre Designees").

     2. Voting. So long as Blackacre beneficially owns shares of Stock
representing (or securities convertible into or exercisable for) at least twenty
percent (20%) of the Stock of the Company outstanding on a fully-diluted basis,
each Stockholder will vote, or direct the voting of, all of the shares of common
stock, par value $.01 per share, of the Company (the "Stock") as to which such
Stockholder now has or hereafter shall have voting power (as defined in Rule
13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange Act")
at all meetings of stockholders of the Company for the election of Directors, or
shall express or direct the expression of consent to any such action of
stockholders taken without a meeting, for the election as Directors of (x) the
Blackacre Designees and (y) one (1) person nominated by Gregory Cuneo and Robert
J. Birnbach.

     3. Tag-Along Sale Rights.

          3.1. Tag-Along by Blackacre. If any of the Stockholders other than
     Blackacre, at any time or from time to time, in one or in a series of
     transactions, enters into an agreement to transfer, sell or otherwise
     dispose of, directly or indirectly (a "Tag-Along Sale"), any Stock to any

<PAGE>

     person or entity, Blackacre shall have the right to participate in such
     Tag-Along Sale by selling up to the total number of shares of Stock
     proposed to be sold in the Tag-Along Sale by all Stockholders (other than
     Blackacre) participating in the Tag-Along Sale pursuant to Section 3.3.

          3.2. Tag Along by Stockholders Other than Blackacre. If Blackacre at
     any time or from time to time, in one or in a series of transactions,
     enters into a Tag-Along Sale in respect of any Stock to any person or
     entity, all Stockholders other than Blackacre shall have rights to
     participate in such Tag-Along Sale by selling up to the total number of
     shares of Stock proposed to be sold in the Tag-Along Sale by Blackacre
     pursuant to Section 3.3.

          3.3. Notice. Any Stockholder shall, if participating in a Tag-Along
     Sale (the Notifying Stockholder"), promptly provide the other Stockholders
     with written notice of such Tag-Along Sale. The Notice shall set forth: (i)
     the name and address of the proposed transferee or purchaser of the Stock
     in the Tag-Along Sale; (ii) the name of the seller or transferor and the
     number of shares proposed to be transferred or sold; (iii) the proposed
     amount and form of consideration to be paid for such shares and the terms
     and conditions of payment offered by the proposed transferee or purchaser;
     (iv) the number of shares that Blackacre or the Stockholders other than
     Blackacre, as the case may be, are entitled to include in the Tag-Along
     Sale; and (v) that the proposed transferee or purchaser has been informed
     of the "tag-along rights" provided for in this Article 3 and has agreed to
     purchase Stock in accordance with the terms thereof. Upon receipt of a
     Notice, the recipient Stockholder (the "Recipient") shall within ten (10)
     days thereafter give written notice (the "Recipient Notice") to the
     Notifying Stockholder and the Company of the Recipient's election
     (including number of shares) to be included in the Tag-Along Sale. If a
     Recipient fails to provide the Recipient Notice as provided herein, the
     Notifying Stockholder is thereafter free to sell in accordance with the
     terms set forth in the Notice. Based on the application of the foregoing,
     the Company or any officer shall determine the aggregate number of shares
     of Stock to be sold by the Stockholder in any given Tag-Along Sale.

          3.4. Type of Consideration. The provisions of this Article 3 shall
     apply regardless of whether the consideration received in the Tag-Along
     Sale is cash, debt, equity securities, property-in-kind, or any combination
     thereof.

          3.5. Duration. The Tag-Along Sale rights granted in this Article 3
     shall continue from the date hereof for so long as Blackacre holds any
     Stock, or until the date, if earlier, when the other shareholders cease to
     own any Stock, and then shall terminate and be of no further force and
     effect.

     4. Miscellaneous.

          4.1. Amendment. This Agreement and the Schedule hereto may not be
     amended except by an instrument in writing signed by or on behalf of each
     of the parties hereto.

                                       2
<PAGE>

          4.2. Waiver. Any agreement on the part of a party hereto to any
     extension or waiver shall be valid only if set forth in an instrument in
     writing signed by or on behalf of such party.

          4.3. Governing Law. The interpretation and construction of this
     Agreement, and all matters relating hereto, shall be governed by the laws
     of the State of New York.

          4.4. Captions. The Section captions used herein are for reference
     purposes only, and shall not in any way affect the meaning or
     interpretation of this Agreement.

          4.5. Publicity. None of the parties hereto shall issue any press
     release or make any other public statement, in each case relating to or
     connected with or arising out of this Agreement or the matters contained
     herein, without obtaining the prior approval of the other parties to the
     contents and the manner of presentation and publication thereof, except
     such reports or other notices that the party issuing or making same has
     been advised by counsel are required pursuant to applicable law or
     regulation.

          4.6. Notice. Any notice required hereunder shall be in writing and
     shall be sufficiently given if delivered or sent by reputable overnight
     courier and facsimile transmission (in each case with evidence of receipt),
     addressed to the Company at its principal office and to the Stockholders at
     the addresses set forth on Schedule A hereto. Any party may change such
     address by like notice. Such notice shall be deemed to have been given as
     of the next business day after it was deposited with the courier service.

          4.7. Parties in Interest. This Agreement shall be binding upon and
     shall inure to the benefit of the parties hereto and their respective
     successors and assigns.

          4.8. Counterparts. This Agreement may be executed in two or more
     counterparts, all of which taken together shall constitute one instrument.

          4.9. Entire Agreement. This Agreement, including the Schedule referred
     to herein, which forms a part hereof, contains the entire understanding of
     the parties hereto with respect to the subject matter contained herein and
     therein. This Agreement supersedes all prior agreements and understandings
     between the parties with respect to such subject matter.

                                       3
<PAGE>

     IN WITNESS WHEREOF, each of the parties has executed this Agreement on the
date first set forth above.

CERBERUS CAPITAL MANAGEMENT,           DUALSTAR TECHNOLOGIES CORPORATION
  L.P., on behalf of various funds
  and accounts

By: /s/ Mark A. Neporent               By: /s/ Gregory Cuneo
    -------------------------------        ---------------------------------
    Mark A. Neporent                       Gregory Cuneo
                                           President and Chief Executive Officer

                                           /s/ Gregory Cuneo
                                           ---------------------------------
                                           Gregory Cuneo, individually

BLACKACRE CAPITAL MANAGEMENT               /s/ Robert J. Birnbach
  L.L.C., on behalf of various funds       ---------------------------------
  and accounts                             Robert J. Birnbach, individually

By: /s/ Ronald J. Kravit
    -------------------------------
    Ronald J. Kravit

                                       4
<PAGE>

                                   SCHEDULE A*

               NAMES, ADDRESSES AND STOCK OWNERSHIP OF THE COMPANY

              NAME AND ADDRESS                       COMMON STOCK OWNERSHIP
----------------------------------------------- -------------------------------

                                                             435,000
Gregory Cuneo
c/o DualStar Technologies Corporation
One Park Avenue
New York, New York 10016
Fax No.  212-616-6254

Robert J. Birnbach                                             2,000
c/o DualStar Technologies Corporation
One Park Avenue
New York, New York 10016
Fax No.  212-616-6254

Cerberus Partners, L.P.                                           --
450 Park Avenue, 28th Floor                                  -------
New York, New York 10022
Fax No. 212-593-5955

Blackacre Capital Management L.L.C.                               --
450 Park Avenue, 28th Floor                                  -------
New York, New York 10022
Fax No. 212-593-5955

--------
* As of 3/17/00.

                                       5

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00009-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00009-of-00352.parquet"}]]