Rev. A.2, 1/04
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APPENDIX A: 2601 CODE STRUCTURE
The 26 bit transmission begins with a parity bit followed by 24 code bits and ended by a second parity bit. The first
parity bit is even parity calculated over the first 12 code bits as follows: if the 12 bits sum to 0, the parity bit is set to
0. If the 12 bits sum to 1, the parity bit is set to 1. The second (ending) parity bit is odd parity calculated over the
second 12 code bits as follows: if the second 12 bits sum to 0, the parity bit is set to 1. If the second 12 bits sum to
1, the parity bit is set to 0.
The 24 code bits have internal structure as follows. The first eight bits are the facility code. The next 16 bits are
the PIN code. All data is transmitted Most Significant Bit first from the keypad. The transmission begins with the
even parity bit, proceeds through the eight bit facility code followed by the 16 bit PIN code and ends with the odd
parity bit.
The transmission of a 0 bit occurs when the data 0 line transitions below 1.1 V for 50 microseconds. The
transmission of a 1 bit occurs when the data 1 line transitions below 1.1 V for 50 microseconds. The interval
between bit transmitting pulses is one millisecond.
MAGNACARE
®
LIMITED LIFETIME WARRANTY
SECURITRON MAGNALOCK CORPORATION warrants that it will replace at customer’s request, at any time for
any reason, products manufactured and branded by SECURITRON.
SECURITRON will use its best efforts to ship a replacement product by next day air freight at no cost to the
customer within 24 hours of SECURITRON’s receipt of the product from customer. If the customer has an account
with SECURITRON or a valid credit card, the customer may order an advance replacement product, whereby
SECURITRON will charge the customer’s account for the price of the product plus next day air freight, and will
credit back to the customer the full amount of the charge, including outbound freight, upon SECURITRON’s receipt
of the original product from the customer.
SECURITRON’s sole and exclusive liability, and customer’s sole remedy, is limited to the replacement of the
SECURITRON product when delivered to SECURITRON’s facility (freight and insurance charges prepaid by
customer). The replacement, at SECURITRON’s sole option, may be the identical item or a newer unit which
serves as a functional replacement. In the event that the product type has become obsolete in SECURITRON’s
product line, this MAGNACARE warranty will not apply. This MAGNACARE warranty also does not apply to
custom, built to order, or non-catalog items, items made by others (such as batteries), returns for payment,
distributor stock reductions, returns seeking replacement with anything other than the identical product, or products
installed outside of the United States or Canada. This MAGNACARE warranty also does not apply to removal or
installation costs.
SECURITRON will not be liable to the purchaser, the customer or anyone else for incidental or consequential
damages arising from any defect in, or malfunction of, its products. SECURITRON does not assume any
responsibility for damage or injury to person or property due to improper care, storage, handling, abuse, misuse, or
an act of God.
EXCEPT AS STATED ABOVE, SECURITRON MAKES NO WARRANTIES, EITHER EXPRESS OR IMPLIED, AS
TO ANY MATTER WHATSOEVER, INCLUDING WITHOUT LIMITATION THE CONDITION OF ITS PRODUCTS,
THEIR MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.
