The TOTO® AC Powered 0.5 GPM Water Supply Controller Valve for Touchless Bathroom Spouts is designed for use with compatible TOTO spouts. The TOTO touchless faucet is ideal for high-traffic commercial spaces and provides an elegant water conservation solution. The 0.5 GPM controller is CEC and CALGreen compliant. The water flows only when needed and cannot be accidentally left running. Included: controller and mounting hardware. Purchased separately: compatible spout, water supply line for G1/2 connection, and optional mixing valve for water that is not pre-mixed.