# Z-wave devices constantly get lost becoming "unknown"

**URL:** <https://community.homey.app/t/z-wave-devices-constantly-get-lost-becoming-unknown/57312>\
**Category:** Questions & Help\
**Tags:** z-wave, flow\
**Created:** [December 27, 2021, 10:20pm UTC](https://community.homey.app/t/z-wave-devices-constantly-get-lost-becoming-unknown/57312 "2021-12-27T22:20:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Roman.Chizhevskiy](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/roman.chizhevskiy/32/44745_2.png) [@Roman.Chizhevskiy](https://community.homey.app/u/Roman.Chizhevskiy)\
**Post date:** [December 27, 2021, 10:20pm UTC](https://community.homey.app/t/z-wave-devices-constantly-get-lost-becoming-unknown/57312/1 "2021-12-27T22:20:36Z")

</div>

Hello community.  
Need help from experts who knows how to diagnose the problem of loosing devices. Usually my z-dim from Heatit get lost and shown as “Unknown” in the Homey developers tool.  
Today I restarted my homey using systrm restart button and two more devices also lost: danalock and namron switch. See below.

 ![Screenshot_20211227-225932_Samsung Internet](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/9/4919aa268530a4a06e65676f3a60a1cf514eeb7e.jpeg)

Will appreciate any help.