Keyless Entry Transmitter: Description and Operation

The remote keyless entry system transmitter is equipped with three buttons, labeled Lock, Unlock, and Panic. It is also equipped with a key ring and is designed to serve as a key fob. The operating range of the radio frequency transmitter signal is up to 7 meters (23 feet) from the receiver.

Each transmitter has a different vehicle access code, which must be programmed into the memory of the receiver in the vehicle in order to operate the remote keyless entry system. In addition, vehicles with the memory seat/mirror/radio system must have their access codes programmed in the receiver so that the molded-in numbers ~1" or '2" on the back of the transmitter case coincide with the memory "1" and "2" buttons of the memory set switch in the vehicle.

The transmitter operates on two Duracell DL2016 (or equivalent) batteries. Typical battery life is from one to two years.