Philips Hue Secure Smart Contact Sensor, White - 1 Pack - Made for Indoor Doors and Windows - Requires Hue Bridge - Works with The Hue App

This works. I like this better than the motion sensor. Just wish I can set multiple scenes based on time of day

Was using another contact switch. I decided to simplify things since I use all Hue bulbs. Quick set up in app, and install. Had it working in 10 minutes.

Perfect! always works! I used it as a door alarm and to turn on my coutyard lamp when I go out and when I come in. The only problem is that it doesn't allow me to receive notifications only when someone enters. It notifies me when the sensor opens and notifies me when it closes. In other words, if a door closes by itself, it notifies me twice

Easy to install and setup. I placed this on my closet door to automatically turn on and off my Philips Hue lights when the door opens/closes.

The installation was very easy. The magnetic side is quite small so I was able to squeeze it into the frame gap and placed the sensor on the door. Easy integration to the app.