The sensor is mounted in the garage according to manufacturer instructions.
Diy garage door monitor.
Communicate with thinger io to send when the door opened closed auto closed or the module rebooted.
Often you will not even need any tools to mount the sensor.
The build cost 05 and only took an afternoon to complete.
Usually the kits come with one sensor and one monitor.
The doorbell switch now activates the garage door opener and the light comes on when the door opens whole thing runs off the existing door bell transformer using repurposed 4 conductor telephone corded.
Of course that all depends on whether or not you have a server a fair amount of coding skills and a few spare parts lying around.
Another reader stefan sent us entry that accomplishes the same tasks using an android app and an arduino controlled sensor.
Uses ifttt to update a google sheet when the status of the door changes.
The magnet is on the door.
Magnetic reed switches located on the garage door rails to monitor door open and closed.
I have 2 of these modified switches one by the front door and one by the rear allowing me to open and monitor the garage door from either spot.