1、4 Channels: A wireless remote control intelligent controller with 4 relay dry contact outputs, standard 5.0 wide spacing external terminal output, convenient for connecting wires without opening the shell. 2、Large Load: The controller uses a large capacity signal, 10A relay output, strong load capacity, it uses a wide input voltage DC12V‑48V, stable working performance. 3、LED Instructions: Each relay action has power instructions and LED instructions, which is convenient for observing and understanding the working status of each channel of the controller. 4、Good Performance: This controller adopts superheterodyne module to receive, with high sensitivity, long receiving distance, strong anti interference ability and stability. 5、Multi Output Mode: The relay has a variety of output modes, which are set by dial switch, and is more convenient and flexible to choose the output mode. Item Type: Relay Material: ABS + PCB Model: ZK4PC-DC Working Voltage: DC12-48V Static State: 6mA or Lower Working Temperature: -40℃ + 80℃ Receiver Sensitivity: -105dBm or Higher Working Frequency: 433MHz Maximum Load Current: 10A Built in Button Battery in the Remote Control: 2 x CR2016(75mAh) 1 x Relay 1 x Remote Control