The TOTO TEL3GGC-10 is a hydro-powered automatic sensor faucet designed for water efficiency and touch-free operation Its EcoPower system generates electricity from water flow eliminating the need for external wiring or battery replacement This single-supply faucet features a 10-second metered discharge using just 017 gallons per cycle for significant water savings With a durable chrome gooseneck spout and smart self-adjusting sensor this ADA-compliant faucet is ideal for commercial and public restroom installations.