Fibaro door/windows sensor don't work after battery changing

[Guest berga_s]

Hi, I have problems with door/windows sensor every time I need to change the battery...

I change the battery with the magnet off (door/window open), some times is OK some time I need to try to exclude and include again more times before everything work well.
This time, for one sensor I wait 2 month before to change the battery starting from the Fibaro messages and now I've tried to change but the sensor doesn't work.
The other times as soon I put inside new battery the led was lighting, but this time nothing happen.
I've try to check the new battery status and is 3,68V (I have 5 new batteries) and I also tried to use a battery from another working sensor but still nothing happen.
I've try to follow the sensor reset procedure, but still nothing happen.

This door/windows sensor have also the temperature module DS18B20.

Any suggestion?

[Alex 31]

I had this once too.

In my case the sensor was broken.

[Tcheri 15]

You always have to change the batteries with the door open (with the maget far from the sensor). If not, it makes a reset !