Automatic water protection · Moen

Flo by Moen 900-001 smart water shutoff

A 3/4-inch whole-home device that monitors flow, pressure and temperature and can close the main water line automatically.

View the exact Amazon.ca listing →Check before buying

ASIN B00C03D01Q verified on Amazon.ca on August 30, 2026. Price, seller and stock can change.

Short answer

Choose it when one device on the main line should watch for abnormal use and respond without depending only on floor sensors.

How it works

What happens after installation

01
The device learns normal flow and runs pressure checks.
02
An unusual event triggers an alert and risk assessment.
03
Automatic protection can close the main water supply.

Decision facts

The specifications that change the choice

Pipe size: 3/4 inch
Measurements: Flow, pressure and temperature
Leak check: Published daily MicroLeak test
Control: App and automatic shutoff

Good fit

This product makes sense if…

Owners who want whole-home water-use visibility.
Properties that are vacant for part of the year.
Homes with hidden plumbing where floor sensors cannot cover every leak.

Before ordering

Check these points at home

Verify pipe size; the listing is the 3/4-inch model.
Do not install on fire-suppression or hot-water distribution lines.
Confirm Wi-Fi and power near the main water entry.

Ownership

What ownership requires after purchase

Review alerts before enabling aggressive automatic shutoff settings.
Keep the manual main shutoff accessible and labelled.

FAQ

Common questions before buying

Is this product a good fit for a Canadian home?

Choose it when one device on the main line should watch for abnormal use and respond without depending only on floor sensors.

What should I check before buying it?

Verify pipe size; the listing is the 3/4-inch model. Do not install on fire-suppression or hot-water distribution lines. Confirm Wi-Fi and power near the main water entry.

What upkeep should I plan after buying it?

Review alerts before enabling aggressive automatic shutoff settings. Keep the manual main shutoff accessible and labelled.