The EL-645-A sensor assembly is a sensor replacement for Royal® Optima® ES-S (electronic solenoid sensor) and Royal® Optima® ES-S TMO urinal style flushometers. The EL-645-A sensor assembly is intended for exposed ESS-TMO and concealed ES-S urinal flushometers operating with a 24V electrical supply. The sensor plate is chrome plated and mounts onto the wall. An IR sensor is a type of sensor that detects the presence of an object or a person using infrared light. When an object or person comes close to the sensor, the IR light is reflected back to the sensor, which triggers the flushometer to initiate a flush cycle. Sloan offers additional sensors and repair parts based on your flushometer needs

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