SThe GEM-KEYF is a multifunction pendant/keychain transmitter compatible with Napco GEM and GEMC- Series wireless systems. It serves as an area arm/disarm device with two auxiliary functions, and may be used as a police panic and/or auxiliary emergency transmitter. A 3V Lithium coin cell battery powers the GEM-KEYF transmitter (use type CR2032 or Duracell DL2032 only; use of another battery may present a risk of fire or explosion). A flashing LED indication signals a low battery warning to replace the unit. The GEM-KEYF leaves the factory as a remote area arm/disarm transmitter with two Auxiliary buttons, A1 and A2. Auxiliary functions are selected by programming Key-Fob Transmitter Aux 1 and Aux 2 options: Panic, Auxiliary, or Instant protection. In addition, any of the panel's Relay Groups may be selected for controlling exterior lighting, or other applications requiring external relays (RM3008 Relay Modules, optional).