The wide voltage single-channel controller is a friendly, perfect ized practical wireless control device. Working Voltage: DC12V-DC48V; Working Frequency: 433Mhz; Max Load Current:40A Relay (have better Load less than 30A)[Easy to Use].We have made transmitter and receiver working together and test it before ship it,when you get it don't need to do anything ,just install it. It has the advantages of convenient installation, simple and safe use.[Learning functions].Learning functions and single-chip decoding make it easy for customers to use a variety of remote controls. The free setting of the three working modes is convenient for the user to use different control functions, the input voltage range is wide, the output is charged and the output switching signal is more convenient for the user to use in different occasions, which increases the application flexibility of the product.[Application]. wide range of applications from simple domestic remote control to autonomous control, It can be applied to the field of lighting, motor, security industry machine, wireless remote control lights and so on[SIGNAL Stability].This product uses high-frequency technology with long range and stable signal. Independent control can be achieved without mutual interference. You could turn on / off the receiver with transmitter (remote) from any location within a reliable distance. The wireless radio signals can pass through walls, floors and doorsColour:Black+blueMaterial:plasticPackage Contents:1 * Receiver2 * TransmitterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.