EXHIBIT 10.4

                          KEYBANK NATIONAL ASSOCIATION
                                 TERM LOAN NOTE

BORROWER:                     VICON INDUSTRIES, INC.

PRINCIPAL:                    $388,000                Date:  January 29, 1998


PROMISE TO PAY: The undersigned (the "Borrower"),  jointly and severally if more
than one  signer,  does hereby  promise to pay to the order of KEYBANK  NATIONAL
ASSOCIATION  (the "Bank") at its offices at 1377 Motor  Parkway,  Islandia,  New
York 11788,  or at any of its branches,  the sum of THREE  HUNDRED  EIGHTY-EIGHT
THOUSAND  ($388,000) DOLLARS plus interest thereon,  from the date hereof in the
manner set forth below.

COMPUTATION OF INTEREST:  Interest on the outstanding  principal balance of this
Note shall be computed on the basis of "a 360-day year for the actual  number of
days elapsed"  (such  phrase,  as used  throughout  this Note shall mean that in
computing interest for the subject period, the interest rate shall be multiplied
by a fraction, the denominator of which is 360 and the numerator of which is the
actual  number of days  elapsed from the date of the first  disbursement  of the
Loan or the date of the  preceding  interest  and/or  principal due date, as the
case may be,  to the date of the  next  interest  and/or  principal  due  date).
Interest shall accrue until the date of receipt of payment.

RATE AND PAYMENT:  The unpaid principal  balance hereof shall bear interest at a
variable rate equal to the Prime Rate minus One Hundred  Thirty-Five (135) Basis
Points  ("Interest  Rate"),  payable monthly on the first day of the first month
following  the date hereof and on the first day of each month  thereafter  until
this  Note is paid in full.  "Prime  Rate"  shall  mean  that  rate set forth in
Federal Reserve Publication H15(519) under the heading "Prime Interest Rate". If
such rate does not appear on the Federal Reserve  Publication  H15(519) the rate
shall be the Prime Rate as  published  in the "Money  Rates"  column of the Wall
Street Journal. The Prime Rate may not be the lowest rate of interest charged by
KeyBank for commercial or other  extensions of credit.  Each change in the Prime
Rate shall effect a simultaneous and  corresponding  change in the interest rate
hereunder  without  notice to the  Borrower.  Interest  shall be calculated on a
three hundred sixty (360) day year and actual number of days elapsed.

Principal  repayment  shall  begin on March 1, 1998 when  Borrower  shall  begin
making  monthly  installments  of  principal  calculated  on  the  basis  of  an
eighty-four  (84) month  amortization  schedule  plus  accrued  interest  at the
Interest Rate. On February 1, 2003 (the  "Maturity  Date") (or such earlier date
in the event Borrower defaults  hereunder),  the entire unpaid principal balance
of this  Note  and all  accrued  but  unpaid  interest  and any  other  sums due
hereunder shall be due and payable.







                                                                  

Each installment payment shall be applied first to interest at the Interest Rate
with the  balance,  if any,  applied to  principal.  If any monthly  installment
payment is  insufficient  to pay the interest due at the Interest Rate,  KeyBank
will  notify the  Borrower  of the  amount of  additional  interest  due and the
Borrower  will remit said sum to KeyBank or KeyBank shall offset such amount (as
hereinafter provided) within five (5) business days.

PREPAYMENT: The Loan may be prepaid in whole or in part in multiples of at least
$100,000 on the first of each month  following not less than ten (10) days prior
written notice, provided Borrower is not then in default.

Partial  prepayment shall be credited in inverse order of maturity.  Prepayments
of  borrowings  covered  by an  interest  rate  swap  agreement  or  other  rate
protection  mechanism may require termination or adjustment of the swap and will
be subject to the terms and  conditions  of the swap  agreement  with respect to
prepayment/termination.

DEFAULT  INTEREST  RATE:  After  maturity  hereof  (whether by  acceleration  or
otherwise) the principal  amount hereof and the unpaid interest and fees thereon
shall  bear  interest  at a rate per annum  equal to the  greater  of three (3%)
percent in excess of the highest applicable interest rate provided for herein or
sixteen (16%) percent per annum, but in no event shall the rate either be for or
after the occurrence of any event of default or acceleration  exceed the highest
rate of interest, if any, permitted under applicable New York or Federal Law.

RIGHT OF OFFSET: If any payment is not made when due inclusive of any applicable
grace period,  or if the entire balance becomes due and payable and is not paid,
all or part of the amount due may be offset out of any account or other property
which the  Borrower has at the Bank or any  affiliate of the Bank without  prior
notice or demand.

LATE CHARGES:  The Borrower shall pay to the Bank,  prior to maturity,  for each
payment of  principal  and  interest not paid in full within ten (10) days after
its due date, a late fee equal to the greater of five (5%) percent of the amount
of such payment or fifty ($50) dollars,  but not more than one thousand ($1,000)
dollars.

SECURITY:  This Note is secured by:

           (1) a security  interest in and  assignment and pledge of all monies,
deposits,  or  other  sums now or  hereafter  held by the  Bank on  deposit,  in
safekeeping,  transit or otherwise,  at any time credited by or due from Bank to
the Borrower, or in which the Borrower shall have an interest; and

           (2) a mortgage on property located at 89 Arkay Drive,  Hauppauge,  
New York 11788 and known on the Suffolk County Tax Map as District 0800 Section 
181.00 Block 03.00 Lot 002.013 (the "Mortgage"); and






           (3)       an Assignment of All Leases and Rents from the premises 
that is the subject of the Mortgage.

DEFAULT:  The Bank may  declare  the entire  unpaid  balance of this Note due 
and  payable on the  happening  of any of the  following events:

                     (a)  Failure to pay any amount required by this Note when 
due and  Borrower fails to cure such default within five (5) business days, or, 
if applicable, failure to have sufficient funds in its account for loan payments
to be debited on the due date and Borrower fails to cure such default within 
five (5) business days;

                     (b)  Failure to perform or keep or abide by any  term,
covenant or condition contained in this Note, the Mortgage, or any other 
document or instrument given to the Bank in connection with this loan within any
applicable cure period;

                     (c)  The filing of a bankruptcy proceeding, assignment for 
the benefit of creditors, issuance of any execution, garnishment, or levy 
against, or the commencement of any proceeding for relief from indebtedness by 
or against the Borrower;

                     (d)  The happening of any event which,  in the judgment of
the Bank, materially adversely affects the Borrower's ability to repay or the 
value of any collateral;

                     (e)  If any material written representation or statement
made to the Bank by the Borrower is untrue;

                     (f)  If any  material written representation,  covenant or
warranty made to the Bank by the Borrower is breached;

                     (g)  The occurrence of a default under the Mortgage, or any
other document or instrument given to the Bank in connection with this loan and 
Borrower fails to cure such default within any applicable cure period;

                     (h) Failure to provide any reasonable financial information
on request upon reasonable notice or permit an examination of books and records 
upon reasonable notice.

           Notwithstanding the foregoing,  the balance of this Note shall become
immediately  due and payable upon the  occurrence of any of the events set forth
in (c) above.

ATTORNEYS  FEES:  In  the  event  the  Bank  retains  counsel  with  respect  to
enforcement of this Note or any other  document or instrument  given to the Bank
by  reason  of  Borrower's  default,  the  Borrower  agrees  to pay  the  Bank's
reasonable  attorneys fees (whether or not an action is commenced and whether or
not in the court of original jurisdiction, appellate court, bankruptcy court, or
otherwise).





SUBSEQUENT  AGREEMENTS:  The Borrower shall be bound by any agreement  extending
the  time or  modifying  the  above  terms of  payment  made by the Bank and any
owner(s) of the  property  covered by the mortgage  referred to herein,  without
notice to the Borrower,  and the Borrower shall continue to be liable to pay all
amounts due hereunder,  but at an interest rate not exceeding the rate set forth
herein,   according  to  the  terms  of  any  such  agreement  of  extension  or
modification.

MISCELLANEOUS:  Delay or failure of the Bank to exercise any of its rights under
this Note shall not be deemed a waiver  thereof.  No waiver of any  condition or
requirement  shall operate as a waiver of any other or  subsequent  condition or
requirement.  The Bank or any other holder of this Note does not have to present
it before  requiring  payment.  The Borrower waives trial by jury,  offset,  and
counterclaim with respect to any action arising out of or relating to this Note.
This Note may not be modified or terminated orally.  This Note shall be governed
by the laws of the State of New York  without  regard to its  conflicts  of laws
rules.  The Borrower  irrevocably  consents to the jurisdiction and venue of the
New York State Supreme Court, Suffolk County in any action concerning this Note.
This Note is binding upon the Borrower, its heirs, successors and assigns.

                     IN WITNESS WHEREOF, the Borrower has signed this Note as of
the 29th day of January, 1998.

VICON INDUSTRIES, INC.

By:___________________________
   Kenneth M. Darby, President


STATE OF NEW YORK                         )
                                          )  SS.:
COUNTY OF SUFFOLK                         )

             On the 29th day of January, 1998, before me personally came KENNETH
M. DARBY,  to me known,  who being by me duly sworn,  did depose and say that he
has a business  address  located c/o Vicon  Industries,  Inc.,  89 Arkay  Drive,
Hauppauge,  New York;  that he is the President of VICON  INDUSTRIES,  INC., the
corporation  described in and which  executed the foregoing  instrument,  and he
signed his name thereto by order of said corporation.

                                                   --------------------------
                                                   NOTARY PUBLIC