Programming Homelink® Universal Transmitter - Devices With Code Protection Feature: Notes
The Radio Frequency (RF) signals used to operate some home/office systems incorporate a code protection feature. After a channel has been programmed from the hand held transmitter, these systems will need to be trained to accept the signal from the HomeLink® universal transmitter. To check if a system is code protected, operate the appropriate HomeLink® universal transmitter switch. If the status indicator flashes rapidly for 1 to 2 seconds before illuminating permanently, the system has a code protection feature.
Locate the 'Learn' or 'Smart' button at the garage door opener receiver (motor-head unit) in the garage before performing the following steps. This can usually be found directly on the motor-head unit (see the Garage Door Opener manual to identify the 'Learn Button').