Cobra SPYBALL 6829 User Instructions page 21

ONCE ALL THE DIGITS HAVE BEEN ENTERED CORRECTLY, THE SYSTEM DISARMS
WITH A LONG BLEEP AND THEN SWITCHES TO SERVICE MODE (see paragraph 12).
16.1. Reading the PIN code
If you have lost the PIN code but you have a working transmitter, you can recover the code
with this simple procedure:
While the system is disarmed, turn ignition on then press and hold down push-
button n. 1 of the transmitter about 7 secs.  The LED illuminates about 3 seconds,
then it switches off for a short time and subsequently displays 4 sets of flashes.
Count and note the number of flashes in each set. Those are the numbers of the
PIN code.
The end of the reading is confirmed by a short sharp audible signal.
16.2. Changing the PIN code
If you wish, you can replace the original PIN code with one of your choice. The procedure is
described below:
While the system is disarmed, turn the ignition on then press and hold down push-
button n. 1 of the transmitter about 7 seconds.  The LED illuminates about 3
seconds.
During this lapse of 3 seconds, press push-button n. 2.  A short sharp audible
signal confirms you have entered the procedure. The LED extinguishes, then it
starts to flash slowly.
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