EXHIBIT 10.8

                        SCHEDULE TO THE MASTER AGREEMENT

                          dated as of December 11, 1997


between KEYBANK NATIONAL ASSOCIATION and VICON INDUSTRIES, INC.
                  ("Party A")              ("Party B")

Part 1.  Termination Provisions.

(a)  "Specified Entity" means in relation to Party A for the purpose of:
     Section 5(a)(v),    None
                         --------
     Section 5(a)(vi),   None
                         --------
     Section 5(a)(vii),  None
                         --------
     Section 5(b)(ii),   None
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     and in relation to Party B for the purpose of:
     Section 5(a)(v),    Any current or future Affiliate of Party B
                         ----------------------------------------------
     Section 5(a)(vi),   Any current or future Affiliate of Party B
                         ----------------------------------------------
     Section 5(a)(vii),  Any current or future Affiliate of Party B
                         ----------------------------------------------
     Section 5(b)(ii),   Any current or future Affiliate of Party B
                         ----------------------------------------------

(b)  "Specified  Transaction" will have the meaning specified in Section 12 of
     this Agreement.

(c)  The "Cross Default" provisions of Section 5(a)(vi) will apply to Party B.

(d)  "Specified Indebtedness" will have the meaning specified in Section 12 of
     this Agreement.

(e)  "Threshold Amount" means $100,000.

(f)  The "Credit Event Upon Merger" provisions of Section 5(b)(ii) will apply to
     Party B.

(g)  The "Automatic Early Termination" provision of Section 6(a) will apply to
     Party B.

(h)  Payments on Early Termination. For the purpose of Section 6(e) of this
     Agreement:
     (i) Market Quotation will apply.
     (ii)The Second Method will apply.

(i)  Additional Termination Event. For the purpose of Section 5(b) (iii) of this
     Agreement, it shall be an "Additional Termination Event" with Party B being
     the Affected Party if any Credit Support Document expires,  terminates,  or
     fails or ceases to be in full  force and  effect  for the  purpose  of this
     Agreement in  accordance  with its terms prior to the  satisfaction  of all
     obligations of Party B under each Transaction.





Part 2.  Agreement to Deliver Documents.

For the purpose of Section 4(a) of this Agreement, Party B agrees to deliver the
following documents:

(a)  A certificate of an authorized  officer of Party B evidencing the necessary
     corporate  authorizations,  resolutions,  and approvals with respect to the
     execution,  delivery and performance of this Agreement,  and certifying the
     names,  true  signatures,  and  authority  of the  officer(s)  signing this
     Agreement and executing Transactions hereunder.

(b) Quarterly and annual financial statements when requested by Party A.


Part 3.  Miscellaneous.

(a) Addresses for Notices. For the purpose of Section 10(a) of this Agreement:

     Address for notices or communications to Party A:
     Address: 127 Public Square, 01-127-0405, Cleveland, Ohio  44114
     Attention: Interest Rate Risk Management
     Facsimile No.: (216) 689-4737      Telephone No:(216) 689-4961

     Address for notices or communications to Party B:
     Address: 89 Arkay Drive, Hauppauge, NY  11788
     Attention: John Badke, Controller
     Facsimile No.: (516) 951-2288      Telephone No:(516) 952-2288

(b)  Calculation Agent.  The Calculation Agent is Party A.

(c)  Credit Support  Document:  Mortgage and Security  Agreement  dated December
     1997  between  Party A and Party B;  Assignment  of Rents and Leases  dated
     December 1997 between Party A and Party B.

(d)  Credit Support Provider.

(e)  Governing  Law.  This  Agreement  will  be  governed  by and  construed  in
     accordance  with the laws of the State of Ohio without  reference to choice
     of law doctrine.

(f)  Jurisdiction. Section 11(b)(i) and that part of Section 11(b) which follows
     Section 11(b)(ii) are deleted in their entirety and the following  language
     shall be substituted for Section 11(b)(i):

         (i)submits to the exclusive  jurisdiction  of the Court of Common Pleas
            of  Cuyahoga  County and the United  States  District  Court for the
            Northern  District of Ohio,  Eastern  Division,  both located in the
            City of Cleveland.




(g) Definitions. Section 12 is modified as follows:

         (i)"Default Rate" means Prime +2%.

(h)  Payments.

         Party A will make  payments  to Party B by  transfer  to the account of
         Party B at KeyBank National  Association in Cleveland  (Account Number:
         323680013097).

         Party B will make  payments to Party A by transfer  from the account of
         Party B at KeyBank National  Association in Cleveland  (Account Number:
         323680013097),  and Party A is  irrevocably  authorized  to debit  such
         account for each such payment (it being understood that Party B will at
         all times maintain sufficient balances in such
         account for such purposes).

Part 4.  Other Provisions.

Additional  Representation.  Party B represents to Party A (which representation
will be deemed to be repeated by Party B on each date on which a Transaction  is
entered into) that it, or any Credit  Support  Provider,  has either:  (i) total
assets exceeding $10,000,000, or (ii) a net worth of $1,000,000, and is entering
into the Transaction in connection with the conduct of its business or to manage
the risk of an asset or liability owned or incurred,  or reasonably likely to be
owned or incurred in the conduct of its business.

Event of Default.  Each Party agrees to notify the other party of the occurrence
of any Event of Default or Potential Event of Default  immediately upon learning
of the occurrence thereof.

Disclaimer.  In entering into this Agreement,  Party B understands that there is
no assurance as to the direction in which interests  rates in financial  markets
may move in the future and that Party A makes no  covenant,  representation,  or
warranty  in this  regard or in regard  to the  suitability  of the terms of the
Agreement or any Transaction to the particular needs and financial  situation of
Party B. Party B represents,  which representation shall be deemed repeated with
respect to and at the time of each Transaction, that it has had the opportunity,
independently  of Party A and Party A's  affiliates,  officers,  employees,  and
agents,  to consult its own financial  advisors and has determined that it is in
Party B's interest to enter into the Agreement and any Transaction.



      KEYBANK NATIONAL ASSOCIATION                    VICON INDUSTRIES, INC.
- ----------------------------------------   -------------------------------------


By:  ______________________________         By:  ______________________________
     Name:  Jodie Howe                             Name:   Kenneth M. Darby
     Title: Assistant Vice President               Title:  President