Simply place the sensor on the top panel of your garage door to be informed when the garage is even partially open.
Garage door warning system.
When you leave your garage door open the sensor automatically sends a signal to the monitor and a garage door alarm flashes a red light indicating that the door is open.
The garage door sensor can also send you alerts whenever the garage opens or closes.
This chamberlain garage door sensor notifies you if it is open or closed no matter which corner of the house you are in.
Skylink gm 434rtl long range household alert alarm home security safety protection garage door monitor system kit 3 8 out of 5 stars 532 24 99 24.
Skylink gm 434rtl long range household alert alarm home security safety protection garage door monitor system kit 3 8 out of 5 stars 532 24 99 24.
If you don t need that much info you can customize what notifications you want based on time of day or time.
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.