Interlock mode:
When the remote control has two buttons, one button is on and the other button is off, which is called interlocking.
Inching mode：
Use a key control, press and hold the remote control button, the relay is closed; release the remote control button, the relay is disconnected; it is called inching mode.
Manual switch:
no remote control required, press the learning button on the receiver to control on and off, press once to open, then press to close.
