Description: 【Easy to Use】We have made and receiver working together and test it before ship it,when you get it don't need to do anything , just install it. (The remote switch can be controlled remotely or manually) 【 Wide Application】: Mainly used in lamps, electric doors, windows, lifting equipment. Water pump, elevator control, security industry and agricultural irrigation and other fields such as long distance wireless remote control have the advantages of convenient installation, simple use, safe and reliable. 【Output mode】: contact output and voltage output. You can change the working mode by toggle switch yourself, simple and convenient 【Max Load】:30A Relay. Especially suitable for high power loads. 【Signal】The RF remote control adopts RF technology, stable signal. Signal of the wireless RF switch can pass through walls, floors and doors, steadily control receiver from any place within a reliable distance, range is up to 650 ft (200meters)  with no obstacle. Specification: Working Voltage: DC12V-48V Max Load:30A Relay Working : 433MHZ Channel: 4CH Receiver sensitivity: : -105dBM Size Chart: 14.48cmx9.1cmx4cm/5.70inchx3.58inchx1.57inch Package Includes: 1 Remote Controller 1 Receiver Note: Please allow slightly errors due to manual measurement and different monitors.