The 2GIG-KEY2E-345 is a 4-button, eSeries encrypted, key ring remote control that communicates with the 2GIG GC2e and GC3e control panels. The 2GIG-KEY2E-345 device enables you to remotely arm "ON" and disarm "OFF" your 2GIG eSeries alarm system before entering the home or after exiting. If there is an emergency, you can turn on the siren and automatically call the GeoArm central monitoring station. This 2GIG-KEY2E-345 keyfob can be programmed to operate the programmable output in the control panel. Use with the 2GIG universal garage door receiver (2GIG?GDR1?345) to open a garage door. The KEY2E-345 is a lithium coin battery-powered, wireless keyfob designed to fit on a key chain, in a pocket, or in a purse.