EXH10-7
                                 PROMISSORY NOTE


$300,000.00                                               Hartford, Connecticut
                                December 5, 1990

         FOR VALUE  RECEIVED,  AUTOMATED  LIGHT  TECHNOLOGIES,  INC., a Delaware
corporation  having 8  principal  office  and place of  business  in the Town of
Vernon, County of Tolland and State of Connecticut,  (the "Maker"),  promises to
pay to the order of the CONNECTICUT  DEVELOPMENT  AUTHORITY (the "Authority") at
its principal office at 217 Washington Street in the City of Hartford, County of
Hartford and State of Connecticut or at such other place as Authority hereof may
designate in writing,  the principal  sum of THREE  HUNDRED  THOUSAND AND NO/100
($300,000.00)  DOLLARS,  together with interest in arrears thereon from the date
hereof  at the rate of ten  (10%) per  centum  per annum  upon the whole of said
principal sum remaining  from time to time unpaid.  Said  principal and interest
shall be due and payable in monthly installments as follows, viz:

         Upon the execution of this Note, interest from the 5th day of December,
1990 to the 31st day of December,  1990, and thereafter,  Maker shall make equal
monthly  payments  to  principal  and  interest  commencing  on the first day of
January,  1991,  and a like  sum on  the  first  day of  each  and  every  month
thereafter,  which  payments  shall be in an amount that will fully amortize the
loan on January 1, 1996.  As of the date hereof,  the Authority has advanced the
sum of ONE HUNDRED  THOUSAND AND NO/100 DOLLARS  ($100,000.00)  to Maker and the
monthly payments to be made hereunder equal TWO THOUSAND ONE HUNDRED TWENTY-FOUR
AND 70/100  DOLLARS  ($2,124.70)  except for the last payment to be made,  which
equals TWO THOUSAND ONE HUNDRED TWENTY-FIVE AND NO/100 DOLLARS ($2,125.00).  The
Authority  shall advance the remainder of the THREE HUNDRED  THOUSAND AND NO/100
DOLLAR  ($300,000.00)loan  upon  the  written  request  of  Maker  provided  the
following  conditions are met: a) Maker shall have bona fide purchase  orders or
contracts for the purchase of products from Maker and shall have valid  accounts
receivable  for  the  sale of such  products;  b)  Maker  shall  provide  to the
Authority  satisfactory  evidence  to support  the  existence  of such orders or
contracts and accounts receivable; c) such advances shall be in amounts of Fifty
Thousand Dollars ($50,000.00) or greater; d) Maker shall not be in default under
this Note or any of the  documents  executed in  connection  herewith;  e) Maker
shall not have  granted any security  interests  in its property  which would be
prior in right to the amount  advanced;  and f) such  request is made within one
year of the date of this Note. In the event  subsequent  advances are made, then
the monthly payment dues hereunder shall be adjusted to reflect such advance and
to  ensure  payment  in full of this  Note by  January  1,  1996.  Each  monthly
installment  shall be applied  first to the  payment of  interest  on the unpaid
principal  of this Note and the balance on the account of the  principal of this
Note.

         Maker  agrees to pay all taxes or duties  levied or assessed  upon said
sum against Authority or other owner of this Note, the debt evidenced hereby, or
the security agreements securing the same (the "Security Agreements"),  and upon
the  collateral  granted  under the Security  Agreements  and, upon the event of
default to pay all costs, expenses, and attorneys' fees incurred by Authority


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in any proceeding for the  collection of the debt  evidenced  hereby,  or in any
action to enforce its rights in collateral granted under the Security Agreements
upon the happening of a default as provided for in the Security  Agreements,  or
in  protecting  or  sustaining  the lien of the  Security  Agreements  or in any
litigation or  controversy  arising from or connected  with this Note,  the loan
agreement,  of  even  date  herewith,  executed  by and  between  Maker  and the
Authority with respect to the sum evidenced by this Note (the "Loan  Agreement")
or the Security Agreements.

         There shall be an event of default:  (i) If Maker  defaults for fifteen
(15) days in making any payment of principal or interest on this Note, in making
any payment of taxes or any municipal assessment, any insurance premiums, or any
lien or charge  upon any  property  by which this Note is  secured,  as the same
become due, or (ii) if Maker fails to perform any covenant contained in the Loan
Agreement  or the  Security  Agreements  or if  Maker  defaults  under  the Loan
Agreement or the Security Agreements,  or (iii) if an order for relief is sought
by or against Maker under the Federal Bankruptcy Code or acts amendatory thereof
or supplemental  thereto or under any statute either of the United States or any
state in connection with insolvency or  reorganization or for the appointment of
a receiver or trustee of all or a portion of Maker's property and any such order
for relief,  receiver or trustee is not  withdrawn,  dismissed,  discharged,  or
removed  within sixty (60) days,  or (iv) if an assignment of Maker ' s property
is made for the  benefit of  creditors  or (v) if Maker  abandons  any  property
securing  this Note or declares in writing  its  inability  to pay debts as they
come  due,  or (vi)  if  Maker  liquidates  or  dissolves  or is  liquidated  or
dissolved,  or (vii)  if any  collateral  securing  this  Note is  substantially
damaged  in any  manner  and is not  covered by  insurance  deemed  adequate  by
Authority,  or (viii) if the United States of America, the State of Connecticut,
or any agency or subdivision  thereof,  imposes a tax, levy, or assessment on or
concerning  this Note,  which Maker cannot lawfully or does not pay when due, or
(ix) if title to any portion or all of the collateral securing this Note becomes
vested in other  than  Maker  hereof,  or is  encumbered  by  financing  without
Authority's  prior written consent.  Upon the occurrence of an event of default,
the entire principal sum with accrued interest thereon due under this Note shall
at the option of Authority  become due and payable.  No failure to exercise such
option shall be deemed a waiver on the part of  Authority of any right  accruing
thereafter.

         Authority  may collect a "late charge" not to exceed an amount equal to
two (2%)  percent of any  installment  of interest or principal or both which is
not paid  within  ten (10) days of the date on which said  payment is due.  Late
charges shall be separately  charged to and collected  from Maker,  and shall be
due upon demand by Authority.

         Maker shall have the right to prepay this Note in whole or in part upon
any interest  payment  date,  without  penalty.  In the event that the Authority
receives a bona fide third party offer (the "Offer") to purchase this Note prior
to the termination  hereof and desires to accept such offer,  then the Authority
shall give notice of such Offer to Maker. Maker shall have the sight to purchase
this  Agreement on the same terms and  conditions as are set forth in the Offer.
If Maker elects to exercise its rights to purchase this Agreement, it shall give
notice of the same to the  Authority  within thirty t30) days of the date of the
Authority's notice to Maker. Failure of Maker to provide such notice within said
thirty (30) days shall terminate  Maker's right of first refusal with respect to
the Offer.


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         Maker and each and every endorser,  guarantor,  and surety of this Note
and all others who may become  liable for all or any part of this  obligation do
hereby waive demand,  presentment for payment,  protest,  notice of protest, and
notice of  nonpayment  of this  Note,  and do hereby  consent  to any  number of
renewals  or  extensions  of the  time of  payment  hereof  and of the  time for
advances under the Security Agreement,  if any, and agree that any such renewals
or  extensions  may be made  without  notice to any of said  parties and without
affecting their liability  herein and further consent to the release of any part
or parts or all of the security for the payment hereof and to the release of any
party or parties liable hereon, all without affecting the liability of the other
persons, firms, or corporations liable for the payment of this Note.

         Upon the  occurrence  of an event of a  default,  at the  option of the
Authority, the Authority may pay insurance premiums, taxes and assessments,  and
any and all other  expenses  which may be reasonable or necessary to protect the
property  securing  this Note or to protect or sustain the lien of the  Security
Agreement. Any such payment made by the Authority hereof pursuant to said option
shall be added to the principal balance due hereunder and shall bear interest as
set forth  herein from the date of payment by  Authority  or shall be payable on
demand with interest from the date of payment by Authority.

         Maker agrees that all  expenditures  incurred by  Authority  under this
Note other than principal, and the principal of this Note after maturity or upon
an event of default or after a Judgment hereon,  shall bear interest at the rate
of twelve percent (12%) per annum, from the date of demand,  default or judgment
as applicable.

         To induce  Authority  to enter  into the  commercial  loan  transaction
evidenced by this Note, the Security  Agreements and other security hereof, each
maker,  endorser and  guarantor  hereof  agrees that the said  transaction  is a
commercial and not a consumer  transaction and waives any right to notice of and
a hearing  on the  right of  Authority  under  Chapter  903a of the  Connecticut
General Statues or other statute or statutes affecting  prejudgment remedies and
authorizes  Authority's  attorney to issue a writ for prejudgment remedy without
court order, provided the complaint shall set forth a copy of the waiver.

         Should this Note be signed by more than one maker,  the  references  in
this Note to Maker in the singular shall include the plural and a11  obligations
herein contained shall be joint and several obligations of each maker hereof.

         The  term  the  "Authority"  as used in this  Note  shall  include  the
Authority and any subsequent holder or holders hereof.

         This Note shall be governed by and  construed  in  accordance  with the
laws of the State of Connecticut.

                                             AUTOMATED LIGHT TECHNOLOGIES, INC.

                                             By:__/S/_________________________
                                                MOHD A. ASLAMI
                                                Its President
                                                Duly Authorized

This Note is secured by a security  agreement and by a guaranty all of even date
herewith.