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.

Supports a variety of HVAC systems
LED backlight
User programmable schedule

Important Note: Control 4 Products Must Be Professionally Installed
Control4 Black Multi Tuner XM Radio (XM Subscription Required) – C4TUN2EB/ Broadcast Up To Three Simultaneous Audio Streams/ Create Custom Playlists/ Access Your Entire Music Library/ Excellent Audio Quality/ Independent Room Control/ Easily Add More Zones/ Black Finish/ Control 4 Products Must Be Professionally Installed
XM Radio (XM Subscription Required)