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                                                                EXHIBIT 10.8

                          SECURED PROMISSORY NOTE

$616,300.00                                                 October 18, 1996
                                                          New York, New York


     FOR VALUE RECEIVED, the undersigned (hereinafter collectively referred
to as "Borrowers" and individually as a "Borrower"), hereby jointly and
severally promise to pay to the order of THE CIT GROUP/CREDIT FINANCE, INC.,
a Delaware corporation (hereinafter "Lender"), in such coin or currency of
the United States which shall be legal tender in payment of all debts and
dues, public and private, at the time of payment, the principal sum of SIX
HUNDRED SIXTEEN THOUSAND THREE HUNDRED AND NO/DOLLARS, ($616,300), together
with interest from and after the date hereof on the unpaid principal balance
outstanding at a variable rate per annum equal to (i) from the date hereof
through October 31, 1996, 3% above the Prime Rate (as defined in the Loan
Agreement referenced below) and (ii) on and after November 1, 1996, 2.5%
above the Prime Rate.

     This Secured Promissory Note (the "Note") is issued pursuant to, that
certain Loan and Security Agreement among Borrowers and Lender dated October
28, 1994, as amended by that certain letter agreement dated December 27,
1994, that certain Second Amendment to Loan and Security Agreement dated
December 29, 1995, those certain letter agreements dated March 11, 1996, May
14, 1996, June 4, 1996 and July 31, 1996 (hereinafter, as amended from time
to time, the "Loan Agreement"), and is entitled to all of the benefits and
security of the Loan Agreement.  All of the terms, covenants and conditions
of the Loan Agreement and the other loan documents executed in connection
therewith are hereby made a part  of this Note and are deemed incorporated
herein in full.  All capitalized terms used herein, unless otherwise
specifically defined in this Note, shall have the meanings ascribed to them
in the Loan Agreement.

     The rate of interest in effect hereunder shall increase or decrease by
an amount equal to any increase or decrease in the Prime Rate, effective as
of the opening of business on the date that any such change in the Prime Rate
occurs.  Interest shall be computed on the basis of actual days elapsed over
a 360-day year.

     The principal amount and accrued interest of this Note shall be due and
payable on the dates and in the manner hereinafter set forth:

          (a)  Interest shall be due and payable monthly, in arrears, on the
     first day of each month, commencing on November 1, 1996, and continuing
     until such time as the full principal balance, together with all other
     amounts owing hereunder, shall have been paid in full;
     
          (b)  Principal shall be due and payable monthly commencing on
     November 1, 1996, and continuing on the first day of each month
     thereafter to and including the first day of October 1, 1999, in
     installments of $10,271.67 each; and
     
          (c)  The entire remaining principal amount then outstanding,
     together with any and all other amounts due hereunder, shall be due and
     payable on October 28, 1999.

If, prior to the date on which this Note is required to be paid in full in
accordance with the foregoing provisions, the Loan Agreement is terminated
pursuant to Section 9.2 of the Loan Agreement, then the entire unpaid
principal balance and accrued interest on this Note shall be immediately due
and payable in full and shall be paid on the effective date of such
termination.

     Borrowers may prepay this Note in whole at any time or in part from time
to time upon ten (10) days' prior written notice to Lender provided that each
such prepayment shall be made together with accrued interest on the principal
amount so prepaid at the prepayment date plus a premium at the rate set forth
in Section 9.2 of the Loan Agreement.  All partial prepayments, whether
mandatory or voluntary, shall be applied to installments of principal in the
inverse order of their maturities.

     Upon or after the occurrence of an Event of Default, Lender shall have
all of the rights and remedies set forth in Section 7 of the Loan Agreement,
including the right to declare the then  outstanding principal balance and
accrued interest hereof to be and the same shall thereupon become,
immediately due and payable without notice to or demand upon Borrowers, all
of which each Borrower hereby expressly waives.

     This Note evidences an unpaid balance of $116,300 that is owing by
Borrowers to Lender under the Term Loan as of the date hereof and an
additional term loan of $500,000 that is made by Lender to Borrowers as of
the date hereof.  Nothing contained herein is intended to be a novation or an
accord and satisfaction.

     Time is of the essence of this Note.  To the fullest extent permitted by
Applicable Law, each Borrower, for itself and its legal representatives,
successors and assigns, expressly waives presentment, demand, protest, notice
of dishonor, notice of non-payment, notice of maturity, notice of protest,
presentment for the purpose of accelerating maturity, diligence in
collection, and the benefit of any exemption or insolvency laws.

     Wherever possible, each provision of this Note shall be interpreted in
such manner as to be effective and valid under applicable law, but if any
provision of this Note shall be prohibited or invalid under applicable law,
such provision shall be ineffective to the extent of such prohibition or
invalidity without invalidating the remainder of such provision or remaining
provisions of this Note.  No delay or failure on the part of Lender in the
exercise of any right or remedy hereunder shall operate as a waiver thereof,
nor as an acquiescence in any default, nor shall any single or partial
exercise by Lender of any right or remedy preclude any other right or remedy. 
Lender, at its option, may enforce its rights against any collateral securing
this Note without enforcing its rights against any Borrower, any guarantor of
the indebtedness evidenced hereby or any other property or indebtedness due
or to become due to Borrowers.  Each Borrower agrees that, without releasing
or impairing such Borrower's liability hereunder, Lender may at any time
release, surrender, substitute or exchange any collateral securing this Note
and may at any time release any party primarily or secondarily liable for the
indebtedness evidenced by this Note.

     This Note shall be governed by, and be construed and enforced in
accordance with, the laws of the State of New York and is intended to take
effect as an instrument under seal.

     IN WITNESS WHEREOF, Borrowers have caused this Note to be duly executed
and delivered on the date first above written.

                              TELTRONICS, INC.
                              ("Borrower")

                              By:       Ewen Cameron                            
                              Title:    President and CEO                       

                              Attest:   Paul D. Shrader                         
                              Title:    VP Finance, Secretary and Treasurer     

                                                             (CORPORATE SEAL)


                              AT SUPPLY, INC.
                              ("Borrower")

                              By:       Ewen Cameron                            
                              Title:    Chairman and CEO                        

                              Attest:   Paul D. Shrader                         
                              Title:    VP Finance, Secretary and Treasurer     

                                                             (CORPORATE SEAL)