In fact, the receiver has only these 3 functions. Key learning 1 = By pressing a button the relative relay goes on and remains on until the key is pressed, releasing the button the relay goes off, so for all keys from 1 to 12 Key learning 6 = by pressing any key, the relative relay goes on and remains on even releasing the button. By pressing any other key the relay that was on goes off and the relay related to the button goes on, so for all the keys. Learning key 9 = each key pressed sends on the relative relay that remains on. By pressing the same button again the relay goes off, so for all the keys. In case the voltage is lost, the receiver loses the programming and needs to be reprogrammed.
recieved