It is a learning code wireless remote control switch (receiver),the output way /working way can be change as you like ,it is easy to match the transmitter .
The AK-RK04S-12 4 channel wireless remote control switch with 4 Relays. It can make the equipment turn or reverse .on/off and so on come true. The volume is small and the performance is stable and reliable ,high receive sensitivity,
Auto door, window, lifting equipment, entrance access, up and down controller, alarm system industrial control and security etc.