◎ 2-way communication.
◎ Communicate with the alarm panel by double wireless way.
◎ Working voltage: 6V( 4 AAA batteries、50 uA) or 12VDC（100mA）.
◎ Keypad number: at most 8
◎ Wireless communicating distance: 40m (in the open air)
◎ Emitting power: 12dB
◎ Emitting frequency: 433MHz/868MHz