How a remote control garage door works
Any good quality remote control garage door works by using a coding system that is triggered by a remote control panel or portable hand held unit. The coding of the remote control sensors are specific to that individual door and normally use a series of switches within both the remote unit and the opening unit. This results in a unique match for every door.
This prevents the door from being inadvertently opened by a neighbour using a similar device, or a thief wishing to gain entry with a cloned remote control unit.
Today many garage remotes self-code. In simple terms this means that the remote receiver (at the opener) is able to read the unique signal from the remote and pair with it. This should mean that it is impossible for any other remote unit to open an already paired opener on a garage door.
Resolving a faulty remote control system
Most problems with remote malfunctions relate to something simple like the replacement of batteries, however occasionally there can be a more serious cause.
If a remote control fob or panel starts to malfunction or become defective, then it will be necessary to replace it with a compatible substitute. This will require either the serial number or ID given to the unit, or possibly the replacement of both the remote control unit and the receiver, or the receiver’s chip or circuit board.