The Gemini Wireless Keyfob has a 4-Button operation: 2 for On/Off of security system and 2 programmable for Auxiliary functions (panic, medical, any 2 of the panel's eight groups of relays, instant or home automation & X10 remote control). The Fob features a visual indicator which confirms transmission or low battery. Audible panel "chirp(s)" on arm/disarm. For added security, Low Battery is also displayed at keypad. Includes: key ring, neck chain, battery, 2 & 4 key (button) sets and plugs for unused key holes.