EL-640-A / 3305133

The EL-640-A sensor assembly is a sensor replacement for Royal® Optima® ES-S (electronic solenoid sensor) style flushometers. The EL-640-A sensor assembly is intended for exposed urinal flushometers operating with a 24V electrical supply. The sensor plate is graphite 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.