AC 220V Far Distance High Power 30A Relay RF Wireless Remote Control SwitchSpecifications:Remote control TransmitterOperating voltage: DC12V (23A\/12V battery x1)Transmitting frequency: 315MHzEncoding Type: Fixed codeReceiver sensitivity: > -105dBTransmission distance : Max. 1000m(in theory、 open field). In reality it's about 100 ~ 500 meters without barrier.Receiver boardOperating voltage: AC 110V - 240VOutput voltage = Operating voltageOperating frequency: 315MHz(Same with Remote control)Encoding Type: learning code(you can buy extra 315MHz remote controllers for this receiver)Installation:Package included:1 x Wireless reveiver1 x remote control transmitter1 x battery