The working of these sensors is quite simple.
Garage door closed sensor.
It is a beneficial device if you have kids or pets in your house.
The sending sensor shoots out an invisible beam which needs to make a connection with the receiving sensor in order to complete the circuit which allows the garage door opener to close.
Garage door sensors are safety mechanisms that won t allow the door to close if something is blocking their beam of light.
Door open chime entrance entry alert chime wireless door bell open sensor for home business garage retail store apartment office 2 receiver 2 magnetic sensor led flash 4 3 out of 5 stars 77 28 59 28.
Receiver indicator picks up a signal from the sensor and tells you by way of colored led s and perhaps a beep the current state of your garage door it s open or it s closed.
While we can all appreciate these sensors they can become a nuisance if they start to malfunction.
The garage door sensors are the safety add on to your garage doors.
It prevents the doors from automatically closing when anyone is in the doorway.
With some garage door open monitor examples the indicator unit plugs into a wall outlet.