4-button bidirectional radio control for the PowerMaster system. It is used to perform most alarm commands: arming and disarming, emergency signaling, panic alarm, and viewing system status. Immediate visual verification that the requested command has been executed successfully. It employs advanced AES-128 encryption algorithm for message identification. Two-way PowerG protocol, Frequency Hopping- Spread Spectrum and TDMA technology provide the robustness and reliability similar to that of a wired keyboard. Visible low battery indication. It works with 1 lithium battery of 3 V type CR2032. 8 years battery life with normal use. Operating temperature: 0 to 55 ºC. Dimensions: 60 x 34.5 x 12.5 mm