** Please Note: We cannot accept returns on installed water valves. ** The Econet BullDog EVC200-HC2LXL lets you turn your existing water valve - no plumber required - turning it into an automatic water valve so you can shut off the water supply automatically when combined with an automation or security system and water sensors. Works with ZWave compatible hubs like SmartThings, Vera, Hometroller, Wink, ISY-ZWave. Designed to work with newly installed or existing water shut-off valves, the EVC200-HC2LXL simply attaches to a standard 1/4 turn ball valve using the included mounting hardware. 1/2" to 1 1/2" valves are supported. The Bulldog motorized valve controller uses a high torque motor to provide reliable closing when you need it. It offers much higher torque than many competing motorized valves. Once installed it can be paired with an automation hub and/or Zwave water sensors for manual and automatic control. The ingenious design means you can add smart control to an existing valve, or have your plumber put in a standard valve and you can add ZWave or wired control anytime. Plus, if you move you can take it with you! Bulldog can also work with security and automation systems without ZWave by using a direct relay contact closure connection*, taking advantage of the security system's water sensors and control.