Transmitter Programming - Code Alarm CA 421 Owner's Manual

TRANSMITTER PROGRAMMING:

If the need arises for programming of additional or replacement transmitters,
simply follow the 4 steps outlined below:
1. Turn the ignition to the ON position.
2. Press and release the programming switch 3 times.
3. Press and hold the button of the transmitter you wish to add for 3
seconds. The parking lights will flash indicating the transmitter has been
learned.
4. Repeat step 3 for each transmitter up to a total of 4.
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