When performing any troubleshooting steps, you may need to check the serial number or firmware version of your doorbell.
Locating the serial number on the doorbell unit
The serial number for each Wemo Doorbell is printed on the sticker on the back of the doorbell unit itself. This is useful if you do not have the doorbell set up in the Home app but requires removing the doorbell from its mount.
Locating the serial number and firmware version in the Home app
Both the serial number and firmware version of a doorbell can be located in the doorbell settings section of the Home app.
Step 1: Open the Apple Home app and locate the tile for your doorbell.
Step 2: Tap on the tile to load the camera view then tap on the gear icon to bring up the doorbell settings.
Step 3: On the settings page, scroll down to view the Serial Number and Firmware version of your doorbell.