The bridge is the same color as the sensor and measures 4.3 by 1.8 by 2.3 inches. Simply open the front panel to replace the batteries. The enclosure has an IP67 rating for water submersion and is powered by four preinstalled AA lithium metal batteries that should last for a year or longer depending on your meter’s placement (outdoor placement may shorten battery life).
The sensor is a two-tone gray rectangular box that measures 3.4 by 5.7 by 2.4 inches (HWD) and has a curved back panel and a thick rubber strap that lets you attach it to the outside casing of your water meter. The Flume 2 system consists of a strap-on water sensor and a Wi-Fi bridge. It won’t automatically shut the water off like our Editors’ Choice, the $499.99 Flo by Moen Smart Water Shutoff, nor does it interact with as many smart home devices, but it’s significantly less expensive and much easier to install.
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Simply strap it on to your water meter and download the app to see how much water you're using and if there are any leaks. The Flume 2 doesn't require any plumbing work, nor does it need a power source. Spot water detectors like the $59.99 D-Link mydlink Wi-Fi Water Sensor DCH-S161 will sound an alarm if water is collecting in a specific area, but they won’t detect systemwide leaks and provide daily, weekly, monthly, and yearly water usage reports like the Flume 2 Smart Home Water Monitor ($199) does. Along with increased utility bills, undetected water leaks can lead to thousands of dollars of damage to your home if not caught in time.