Two-way radio portable keypad for the PowerMaster system with integrated proximity reader. It allows in a very simple way the arming and disarming of the alarm system and the sending of emergency, fire and panic signals. Control of programmable outputs (PGM) and X-10 devices. Two-way communication with the control panel also provides a visual indication of successful command execution and system status. It can be installed as a fixed element on the wall, or as a portable unit. When mounted on the wall, it provides tamper and supervisory signals (programmable). Two-way PowerG protocol, Frequency Hopping-Spread Spectrum and TDMA technology provide the robustness and reliability similar to that of a wired keyboard. Employs AES-128 (128-bit key) advanced encryption algorithm. Backlight illumination. Typical indoor range: 50-100m. Plays the entry and exit beeps. It works with a 3 V lithium battery type CR123A. Battery life, 5 years with normal use. Operating temperature: 0 to + 49ºC. Dimensions: 127 x 70 x 24 mm.