See also:

Reprogramming Universal HomeRemote Buttons
You can reprogram any of the three buttons by repeating the instructions. ...

California Perchlorate Materials Requirements
Certain types of automotive applications, such as airbag initiators, seat belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate materials. ...

Remote Keyless Entry (RKE) System
The Remote Keyless Entry (RKE) transmitter will work up to 20 m (65 ft) away from the vehicle. On vehicles with remote start the distance will be greater. Press the button to extend the key ...