Features: 1) CE approved 2) GSM card is ok, no any telephone wire and cable, easy-to-install 315MHz / 433.92MHz back-up battery build-in included, power supply adapter 3) Composing message to operate system 4) Auto-dialing of up to 6 programmable telephone numbers 20 - 30 sensors connectible to each protection zone 5) Signal receiving distance of up to 150 meters 6) Activation / de-activation / re-activation through telephone, remote controller or main panel 7) 10 seconds message record 8) Telephone network protection, short message sending function 9) Works as mobile unit and sets up recorded voice 10) Infrared activated / deactivated independently 11) Emergency function and long distance remote control 12) Main unit, separate remote keyboard, two remote controllers, adapter, battery optional 13) Without installation of wires and cables, wireless transmitter and wireless receiver, DIY project support Chinese / English message reply automatically by GSM network mobile when alarm is triggered 14) Programs six groups of telephone numbers 15) High quality 16) DIY project supports Chinese / English message 17) Signal receiving distance is up to 150 meters Specifications: 1) CE and CCC certified 2) Working frequency: 315MHz / 433MHz 3) Power adapter: input: AC 220V, 230 - 240V, 110V; output: DC 9V, 300mA 4) Stand-by current: below 20mA 5) Alarm current: below 150mA 6) Working temperature: -10 - 50°C 7) Working atmosphere pressure: 86 - 106KPa 8) Relative humidity: below 90% 9) Siren decibel: above 85dB 10) Wireless siren: above 120dB 11) Dimensions: 340 x 250 x 78mm (gift box) 12) Net weight: 1,200g