What size is my Flo Smart Water Monitor and Shutoff?

The size of the Flo Smart Water Monitor and Shutoff can be identified on the device.

The picture below shows a part breakdown of your device.
Remove the device cover (Blue cover located on the right side of the picture below) to access the pipe part of the Flo. There, you will find the model number.

Look for the following model numbers (and corresponding sizes):
900-001: 3/4”
900-006: 1”
900-002 1-1/4”