I use a door sensor to turn on the garden light when I open the back door. Quite handy when I hav to put garbage in the outside bin… also when I ope the front door, the Hall light automatically turns on…
besides that homey sens me text message when the House is in "Away"or “Holday” modus and someone opens the door…
oh and I put one in the toilet door to start a fan that I placed in the air-vent-channel… Natural ventilation just didn’t quite cut it so I added a fan… the door-sensor and homey saved me quite som installation trouble with wires and stuff…
