... long way.Control the home appliance remotely.Can support the GSM cell phone, with sending the English message function.Can ... detector, panic button, infrared baluster.No need of the telephone line, very suitable for the garage, store, house , warehouse, shop ... 2A.Wireless receiving distance: ≥ 100mOperating Frequency: 315 or 433 MHZ, GSM 900-1800MHZ. ( 850/1900MHZ is optional)Operating voltage: DC12V, ...