If you no longer have a device that Sense detected in your home, you can remove it from your list of devices. To do this:
1. Navigate to the device's details page, by clicking it in your devices list or on a timeline event created by the device.
2. Scroll to the bottom of the page and select 'Report a Problem.'
3. Select 'Delete this Device.'
Note: If you delete a device still in your home, Sense may re-'learn' it.