Sloan Valve Optima battery-operated, automatic-sensing bedpan washer water closet flushometer. This bedpan washer features 1.6 gallons per flush, dual filtered by-pass diaphragm assembly, 1" NPT angle stop and check supply control, free spinning vandal resistant cap, and 1-1/2" high back pressure vacuum breaker flush connection. A fixed spray arm prevents spillage that occurs with hose spray units. Eliminates the need for a special bedpan washing station. Also available with deoseptic rinse units which incorporates a reservoir for deoseptic solutions. A continuous invisible light beam is emitted from the sensor, as the user enters the beams range (22" to 42") the beam is reflected into the scanner window and transformed into a low voltage electrical circuit which activates a "hold" mode as long as the user remains in the range of the sensor, as the user steps out of the beam range the circuit waits 3 seconds then initiates an electrical "one-time" signal that activates the solenoid beginning the flush cycle, it then automatically resets the light beam. Battery life 3 years at 4,000 flushes per month.