How Does a Remote Garage Door Opener Work?
Garage Door Openers Are Mechanical Most garage door openers open and close garage doors using the same mechanical principles. When a signal is received, either from a hard-wired module or a remote control, the motor turns either clockwise or counterclockwise to open or close the garage door. The next time a signal is received, the motor turns the opposite direction to reverse the action. When the door is fully opened or closed, a small limit switch is activated by the door action to stop the motor. Although a variety of raising and lowering mechanisms–chain drive, belt drive and screw (shaft) drive–exist, these mechanisms are simply conduits that move the door based on the motor’s action. Remote Garage Door Openers Use Radio Frequencies Many drivers find the convenience of being able to operate the garage door from inside the vehicle indispensable. To achieve this operation, remote-control garage door openers use a very low-powered radio transmitter to send a signal to the opener’s i
