Document:

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The following amendments to the 1998 Incentive Stock Option Plan ("Plan") for
Boss Holdings, Inc. (f/k/a Vista 2000, Inc.) ("Company") were adopted and
approved at the annual meeting of shareholders of the Company on May 23,
2000:

1.  The first paragraph of Section 3 of the Plan (Stock Subject to the Plan)
was amended to read in its entirety as follows:

    "Subject to the provisions of Section 13 of the Plan, the maximum
    aggregate number of shares which may be optioned and sold under the Plan
    is 285,000 shares of Common Stock (post 25:1 reverse stock split).  The
    shares may be authorized, but unissued, or reacquired Common Stock."

2.  The following new paragraph 20 was added to the Plan:

    "20.    ACCELERATED VESTING SCHEDULE

    Notwithstanding the foregoing, Shares subject to an Option shall vest as
    to all Shares then subject to the Option upon the occurrence of any of
    the following events:

    (i)     a transaction (or series of transactions occurring within a
    60-day period or pursuant to a plan approved by the Board or shareholders
    of the Company) occurs that has the result that stockholders of the
    Company immediately before such transaction cease to own directly or
    indirectly at least 51% of the voting stock of the Company or of any
    entity that results from the participation of the Company in a
    reorganization, consolidation, merger, liquidation or any other form of
    corporate transaction;

    (ii)    all or substantially all of the assets of the Company shall
    be sold or otherwise disposed of, except that an Option shall not vest
    as to all Shares then subject to such Option if, after such sale or
    disposition: (a) the shareholders of the Company immediately prior to
    such transaction continue to own at least 51% of the voting stock of the
    entities that acquired 50% or more in value of the assets of the Company
    so sold or conveyed; and (b) the acquiring entity agrees to assume the
    obligations of the Company under this Agreement; or

    (iii)   the occurrence of a merger, consolidation or other reorganization
    of the Company under the terms of which the surviving entity does not
    assume the obligations of the Company under this Agreement."

Acknowledged by the undersigned officer of the Company, effective as of
May 23, 2000.

    /s/  James F. Sanders
------------------------------------
    James F. Sanders, SecretaryJanney Montgomery Scott LLC
                             26 Broadway, 8th Floor
                            New York, New York 10084

                                  May 12, 2000

Mr. Richard K. Laird
President and Chief Executive Officer
Relm Wireless Corporation
7505 Technology Drive
West Melbourne, Florida  32904

Dear Mr. Laird:

     This letter will confirm our understanding concerning the investment
banking services that Janney Montgomery Scott LLC ("JMS") will render to Relm
Wireless Corporation ("Relm" or the "Company").

     More specifically, JMS will advise and/or represent Relm commencing from
the date of this letter with regard to investment, merger, acquisition and
financing opportunities. Relm management will assist JMS and will cooperate with
JMS in analyzing data presented, facilitating management interviews and
scheduling facility visits.

     In connection with our engagement, JMS shall purchase 166,153 Warrants (see
Exhibit A for terms of Warrants) at the aggregate purchase price of $100.00. JMS
may receive additional fees (as mutually agreed) in connection with these
ongoing investment banking services.

     Relm will reimburse JMS for its accountable travel and other accountable
out-of-pocket expenses, which shall be pre-approved by the Company.

     If the foregoing correctly states our mutual understanding, please sign the
enclosed copy of this letter and return it to the undersigned.

                                                   Sincerely yours,

                                                   JANNEY MONTGOMERY SCOTT LLC

                                               By: /s/ William J. Barrett
                                                   ----------------------
                                                   William J. Barrett
                                                   Senior Vice President

    Accepted and Agreed to:

    RELM WIRELESS CORPORATION

By: /s/ Richard K. Laird
    --------------------
    Richard K. Laird
    President and Chief Executive Officer

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                                    Exhibit A
              Warrants to be issued to Janney Montgomery Scott LLC

Term:                                 5 years from the initial exercise date

Exercise Price:                       $3.25 per share of common stock

Exercise Provision:                   Each Warrant will entitle the holder to
                                      purchase one share of common stock and
                                      shall be exercisable at the earlier of (a)
                                      the approval by shareholders at the next
                                      annual meeting of shareholders of a
                                      financing plan developed by the Company
                                      and JMS, or (b) September 16, 2000.

Anti-Dilution:                        Similar to the anti-dilutive provisions
                                      contained in the 8% Convertible
                                      Subordinated Promissory Notes due December
                                      31, 2004, issued by the Company in March,
                                      2000 (the "Debentures").
Aggregate Purchase Price of
Warrants:                             $100.00

Registration Rights:                  The Company agrees to register the
                                      Warrants and the common stock underlying
                                      the Warrants at the Company's expense
                                      concurrently with the registration of the
                                      common stock underlying the Debentures and
                                      maintain the effectiveness of such
                                      registration for a period of two years
                                      from the issuance date of the Warrants.WARRANT CERTIFICATE - JMS/DGR/EXECUTION A

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR ANY STATE SECURITIES
LAWS, AND MAY NOT BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED
OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO (I) AN EFFECTIVE REGISTRATION
STATEMENT UNDER THE ACT, (II) TO THE EXTENT APPLICABLE, RULE 144 UNDER THE ACT
(OR ANY SIMILAR RULE UNDER SUCH ACT RELATING TO THE DISPOSITION OF SECURITIES),
OR (III) AN OPINION OF COUNSEL, IF SUCH OPINION SHALL BE REASONABLY SATISFACTORY
TO COUNSEL TO THE ISSUER, THAT AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT IS
AVAILABLE.

No. W-100

                               Warrant Certificate

                            RELM WIRELESS CORPORATION

     This warrant certificate certifies that Janney Montgomery Scott LLC
("JMS"), or its registered assigns, is the registered holder of Warrants
representing the right to purchase One Hundred Sixty-Six Thousand One Hundred
Fifty-Three (166,153) shares (the "Underlying Shares") of common stock, par
value $.60 per share (the "Common Stock") of Relm Wireless Corporation (the
"Company") in accordance with the terms of that certain Warrant Agreement dated
May 12, 2000 between the Company and JMS (the "Warrant Agreement"). The Warrants
with respect to the Underlying Shares expire on May 11, 2005 (the "Underlying
Share Expiration Date"). Capitalized terms used but not otherwise defined herein
shall have the meanings ascribed to such terms in the Warrant Agreement.

     The Warrants shall be exercisable at the earlier of (i) the approval by the
shareholders of the Company, at the Annual Meeting of Shareholders to be held in
the year 2000, of a financing plan developed by the Company and JMS, and (ii)
September 16, 2000 (the "Initial Exercise Date"). The Warrants entitle the
registered holder, upon exercise from time to time from 9:00 a.m. New York City
time on or after the Initial Exercise Date until 5:00 p.m. New York City time on
the Underlying Share Expiration Date, to purchase Underlying Shares at an
exercise price per Underlying Share of $3.25 (the "Underlying Share Purchase
Price") in lawful money of the United States of America upon surrender of this
certificate and (i) delivery of a completed and signed Subscription Form and
payment of the Underlying Share Purchase Price, or (ii) delivery of a completed
and signed Cashless Exercise Form, all in accordance with the terms of the
Warrant Agreement. The Underlying Share Purchase Price and the number of
Underlying Shares issuable upon exercise of the Warrants are subject to
adjustment upon the occurrence of certain events set forth in the Warrant
Agreement.

     The Warrants with respect to the Underlying Shares may not be exercised
after 5:00 p.m. on the Underlying Share Expiration Date, and, to the extent not
exercised by such time, the Warrants shall become void.

<PAGE>

                                       WARRANT CERTIFICATE - JMS/DGR/EXECUTION A

     This warrant certificate shall be governed by and construed in accordance
with the laws of the State of New York, without regard to conflicts of laws
principles thereof. Any controversy or claim arising out of or relating to this
Warrant Certificate or the Warrant Agreement, or the breach thereof, shall be
settled by arbitration in the City, County and State of New York in accordance
with the Commercial Arbitration Rules of the American Arbitration Association as
supplemented by its Large Complex Case Procedures, and judgment upon the award
may be entered in any court having jurisdiction thereof. The prevailing party,
as determined by the arbitrators, shall be entitled to receive an award of its
reasonable attorneys' fees, costs and disbursements.

     IN WITNESS WHEREOF, Relm Wireless Corporation has caused this warrant
certificate to be signed by its duly authorized officers.

Dated: May 12, 2000

                                      RELM WIRELESS CORPORATION

                                By:   /s/ Richard K. Laird
                                      -------------------------------------
                               Name:  Richard K. Laird
                              Title:  President and Chief Executive Officer

                                By:   /s/ William P. Kelly
                                      ------------------------------------------
                               Name:  William P. Kelly
                              Title:  Vice President and Chief Financial Officer

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