# Fibaro multi-sensor generates false motion alarm **URL:** \ **Category:** Devices\ **Tags:** z-wave\ **Created:** [August 6, 2021, 8:05am UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133 "2021-08-06T08:05:40Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Henk\_Stap](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_stap/32/22972_2.png) [@Henk\_Stap](https://community.homey.app/u/Henk_Stap)\ **Post date:** [August 6, 2021, 8:05am UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/1 "2021-08-06T08:05:40Z")
Since a year I have a Fibaro multi-sensor that works perfectly. However since a few weeks it generates false motion alarms during the night (might also during day time, but that does not impact my flow). I noticed that this happens exactly every 2 hours, which made me think that it is related to the wake-up of the sensor which happens every 7200s. I have now switched off the wake-up. What could cause this false motion alarm? Is it really related to the wake-up? ---
**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\ **Post date:** [August 6, 2021, 9:28am UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/2 "2021-08-06T09:28:47Z")
> [@Henk\_Stap](#): > > What could cause this false motion alarm? Maybe a nearly empty battery. I have noticed this myself with the Fibaro and the NEO Coolcam motion sensors, but not depending on the wake up interval. ---
**Author:** ![Henk\_Stap](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_stap/32/22972_2.png) [@Henk\_Stap](https://community.homey.app/u/Henk_Stap)\ **Post date:** [August 6, 2021, 2:53pm UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/3 "2021-08-06T14:53:31Z")
Battery status shows as 85%. Also removed battery and inserted again. No difference. ---
**Author:** ![JPe4619](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jpe4619/32/9017_2.png) [@JPe4619](https://community.homey.app/u/JPe4619)\ **Post date:** [August 6, 2021, 4:18pm UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/4 "2021-08-06T16:18:20Z")
> [@Henk\_Stap](#): > > shows as 85%. Dont trust these values, try again with a new battery ---
**Author:** ![Henk\_Stap](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_stap/32/22972_2.png) [@Henk\_Stap](https://community.homey.app/u/Henk_Stap)\ **Post date:** [August 7, 2021, 1:21pm UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/5 "2021-08-07T13:21:10Z")
I have swapped the battery. Will see how it behaves from now on. ---
**Author:** ![Henk\_Stap](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_stap/32/22972_2.png) [@Henk\_Stap](https://community.homey.app/u/Henk_Stap)\ **Post date:** [August 12, 2021, 12:35pm UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/6 "2021-08-12T12:35:57Z")
The problem with the false alarm seems to be solved after the battery has been replaced. Looks like it was empty although it still reported 70% on the battery. I also put this battery in a Neo-Coolcam sensor and that one reported the battery status as 50%. Both are not vey reliable looks like. ---
**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\ **Post date:** [August 12, 2021, 1:19pm UTC](https://community.homey.app/t/fibaro-multi-sensor-generates-false-motion-alarm/50133/7 "2021-08-12T13:19:32Z")
As @JPe4619 already said, don’t trust the values to 100 %. This is e.g. an example for a strange behavior. I didn’t changed the battery the whole time. The device is a Fibaro KeyFob ![Bildschirmfoto 2021-08-12 um 15.14.26](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/6/7614e981ac6703f606f4f97aa86f88a3947ca7a2.png)