AC 220V Far Distance High Power 30A Relay RF Wireless Remote Control Switch Specifications: Remote control Transmitter Operating voltage: DC12V (23A\/12V battery x1) Transmitting frequency: 315MHz Encoding Type: Fixed code Receiver sensitivity: > -105dB Transmission distance : Max. 1000m(in theory, open field). In reality it's about 100 ~ 500 meters without barrier. Receiver board Operating voltage: AC 110V - 240V Output voltage = Operating voltage Operating 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 reveiver 1 x remote control transmitter 1 x battery