ESP II Electronic Urinal Supply. Heavy chrome-plated forged housing encloses components to protect against tampering, while allowing easy access for maintenance. Assembly shipped complete with 3/4" inlet angle stop and outlet flush tube/vacuum breaker. Battery operated by four ‘AA’ Batteries (included) to provide trouble free service. Assembly includes slow closing solenoid valve to prevent water hammer. Product is ideally suited for health care facilities, educational institutions and all commercial applications.