Logging into the Kevo app from another smart device will disable the device you previously used.
TO DISABLE A SMART DEVICE USING THE WEB PORTAL:
1. Log into your account at www.mykevo.com
2. Go to Settings > Disable Device
3. Click the "DISABLE" button. It may take a few minutes for the device to receive the command to become disabled.
4. To enable your device again, simply log in using the device's Kevo mobile app.