LeakSMART - First Generation Leak Prevention Kit - (1) Shut Off Valve for 3/4" Water main + (1) Sensor INCLUDES: [FIRST GENERATION] (1) leakSMART patented, automatic water shut-off valve (3/4"), (1) leakSMART wireless & waterproof sensor - Professional installation is recommended.;LEAK PROTECTION: The leakSMART FIRST GENERATION Valve is a patented, electronic motorized brass water ball valve that connects directly to your homes main water supply, always ready to automatically shut off your water in the event of a leak;LEAK DETECTION SENSORS: leakSMART FIRST GENERATION Sensors are wireless and waterproof, so you can easily and continuously monitor moisture and temperature throughout the house. Additional sensors can be purchased separately;COMPATIBILITY: When paired with a Wink, IRIS, or Zigbee based system, each leakSMART sensor is designed to signal your leakSMART Valve to automatically shut off your water the moment a potential leak is detected, and to send you instant notifications - in less than 5 seconds;Connect. Protect. Trust.