# Device 3F? **URL:** \ **Category:** Devices & Integrations\ **Created:** [February 17, 2021, 9:46pm UTC](https://community.smartthings.com/t/device-3f/220888 "2021-02-17T21:46:19Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![devedsmith](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/devedsmith/32/124477_2.png) [@devedsmith](https://community.smartthings.com/u/devedsmith)\ **Post date:** [February 17, 2021, 9:46pm UTC](https://community.smartthings.com/t/device-3f/220888/1 "2021-02-17T21:46:19Z")
Does anyone have any idea what the device is in my attached screenshot? ![Screenshot_20210217-164500_Edge](https://global.discourse-cdn.com/smartthings/original/3X/2/c/2cd6c5f4036bf600fe9912ef01df4c693c54dd31.png) ---
**Author:** ![Automated\_House](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/automated_house/32/99641_2.png) [@Automated\_House](https://community.smartthings.com/u/Automated_House)\ **Post date:** [February 17, 2021, 10:08pm UTC](https://community.smartthings.com/t/device-3f/220888/2 "2021-02-17T22:08:51Z")
it’s a z-wave ghost > [@FAQ: How to remove ghost devices from your z-wave and zigbee networks](https://community.smartthings.com/t/faq-how-to-remove-ghost-devices-from-your-z-wave-and-zigbee-networks/199975): > > Sometimes after doing a Z-Wave repair you’ll notice error messages on your logs from unknown devices which only have a device id or when you’re looking at the device routing table you’ll notice an Unknown Device listed. These are ghost device, i.e. devices that are no longer paired with the [SmartThings hub](https://amzn.to/3RK8oTA) and not recognized but still remain in the network routing tables. The problem with ghost devices is that they can create issues with the mesh, unresponsive devices, slow communication, delays and other issues. NOTE: Starting [firmware 37.x](https://community.smartthings.com/t/hub-firmware-beta-0-37-x/226077) the hub should automatically detect and remove ghost devices. You can use this wiki to search and remove any left over ghost devices. There are two way to identify ghost devices, either by looking at the routing table for the device (which shows on… ---
**Author:** ![devedsmith](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/devedsmith/32/124477_2.png) [@devedsmith](https://community.smartthings.com/u/devedsmith)\ **Post date:** [February 18, 2021, 11:47am UTC](https://community.smartthings.com/t/device-3f/220888/3 "2021-02-18T11:47:49Z")
Thank you! That worked great. ---
**Author:** ![devedsmith](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/devedsmith/32/124477_2.png) [@devedsmith](https://community.smartthings.com/u/devedsmith)\ **Post date:** [February 18, 2021, 12:33pm UTC](https://community.smartthings.com/t/device-3f/220888/4 "2021-02-18T12:33:42Z")
Well I thought it worked. I have three of these ghost devices. When I create the device using the ID indicated in the log, then delete the device, the ghost devices reappear the next time I run the zwave repair tool - with new ID numbers. I went through this process for each recurring ID SEVEN times to no avail. It was then that I decided to report it to Smartthings tech support. Any other thoughts? Here’s a screenshot of the log: ![Zwave Repair Log](https://global.discourse-cdn.com/smartthings/original/3X/8/3/8312aaaa594d29e0773f5afbfc0b16bd9b2f6b24.jpeg)