First Alert VWS02Y-1/2 L5 WiFi Actuator with 1/2 in NPT Ball Valve

The VWS02Y-1/2 is an L5 Wi-Fi shutoff valve from First Alert (by Resideo), 1/2 in NPT lead-free ball valve with actuator.

Water damage is the claim that does not need a flood. A supply line that weeps behind a wall, a water heater that lets go while the house is empty, a washing machine hose at the end of its life — all of it runs until somebody notices, and the cost is the drying and the rebuild rather than the water.

This is the part that ends it. The actuator drives a full-port ball valve on the main; when the sensor finds water, or when you close it from the app, the supply stops. A detector tells you there is a leak. A valve stops it while you are in another state.

Size it to the main, not to the fixture — this one is 1/2 in NPT. The valve is lead-free because it sits in potable supply.

In the box: L5 actuator, lead-free ball valve, power supply adapter, actuator to ball valve metal clip, 5 ft water leak detector cable.

Mount orientation is free, which matters where the main enters at an awkward angle.

• Brand: First Alert (by Resideo)
• Manufacturer Part #: VWS02Y-1/2
• Type: Wi-Fi water shutoff valve
• Pipe size: 1/2 in
• Connection: NPT
• Valve type: Ball Valve
• Power: 100 to 240 V
• Fluid temperature: 36 °F to 149 °F
• Includes: L5 Actuator, Lead-free Ball Valve, Power Supply Adapter, Actuator to Ball Valve Metal Clip, 5 ft Water Leak Detector Cable
• UPC: 194159007901
• Category: Leak Detection Valves