# Telldus Z-Wave Wall Contact strange behaviour

**URL:** <https://community.homey.app/t/telldus-z-wave-wall-contact-strange-behaviour/85404>\
**Category:** Questions & Help\
**Created:** [July 27, 2023, 7:58pm UTC](https://community.homey.app/t/telldus-z-wave-wall-contact-strange-behaviour/85404 "2023-07-27T19:58:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ManuSwe](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/manuswe/32/56617_2.png) [@ManuSwe](https://community.homey.app/u/ManuSwe)\
**Post date:** [July 27, 2023, 7:58pm UTC](https://community.homey.app/t/telldus-z-wave-wall-contact-strange-behaviour/85404/1 "2023-07-27T19:58:31Z")

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Hi,  
Something really strange happend today, one of my Telldus Z-Wave Wall Contact got Activated, Desactivated and Activated again from Telldus Z-Wave, not from Web, not from Mobile, not from Flow.  
Does anyone knows what “Telldus Z-Wave” is and how it can send a signal to a wall contact without my knowledge?  
Thanks.  
 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/4/145f60991c1d860610a39d6c414a5396e8bcade1.png)