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

I've had these contact sensors on my home's main doors and never had false alarms. I use them to turn the lights on when I enter home, and as a security system to let me know if someone opened the door while I'm away. Haven't had to replace the battery and they've had more than 1 year of use. Setup was easy too (you need 1 Hue Bridge tho).

Works as advertised if you use hue

Can’t say much other than, it works as intended. Set it up and forget about it.

I added this sensor to my bedroom closet to quietly notify me when my closet door is opened. It works perfectly. I was worried that it was refurbished, but it came perfectly packaged with mounting hardware and instructions on how to use it.

I wanted to use this to turn on the lights in a room from a certain time to a certain time which is not possible in the Hue App. Had to integrate with HomeKit. Was not a huge issue but rather annoying. Also, most of the features for it you have to use with the Hue Security system rather than just a regular Hue device like the outdoor motion sensors.

It is just a door sensor and works fine doing that.When grouped with other Philips Hue Secure products to form an alarm system, is where it fails.The only thing it does it put a notification on your phone when one of the devices is triggered.The alarm (flashing lights / siren) only comes on, if you go into the app and tell it to come on.Example: It is the middle of night and someone kicks you front door in, you get a notification on your phone and that is it. No flashing lights and no siren. Not a real alarm system.