NetatmoSmart Door and Window Sensors, wireless, one-piece, pack of 3, vibration detection, DTG-UK

Adding to existing system. The communication range is terrible. If your camera isn't within 2 meters you will get constant loss of signal. Any objects/walls (even partial walls and small cupboards) cause big problems for communications. Alerts can be too slow because of signal issues. Surprised just how bad the range is on these things!

I get a fair number of messages in the app reporting sensor disconnects and ended up designing and a 3D printing holder to address the issue of the "Fragile" battery holder. Performance wise, they are excellent except for the range and disconnect issues.I found the installation simple and they are good value when offered at a discounted price.

Easy to install and setup, works as intended. Had to turn down the sensitivity of the one on our front door as the vibrations from the postman would sometimes trigger the alarm. Another thing to note is the range on these are not too good, we use them on the first floor only and they all seem to only have 2 bars of signal strength even tho one of them is only a few meters away from the camera. Love the fact that it tells you if you've left open a door or window.

It takes a while to install and calibrate them, however after that they work very well to detect any movement of the door or vibration. A bit expensive but worth the money

It is so sensitive that it pings when my (admittedly big) dog barks close by