NJL5820R Rotary Detection Sensor Nisshinbo NJL5820R Rotary Detection Sensor is a compact surface mount type photo reflector built in a high brightness Infrared LED and PDIC. This sensor offers two-phase (A, B) digital output signals with the recommended striped reflector. The NJL5820R sensor operates from 2mA to 10mA forward current, 2.7V to 5.5V supply voltage range, and -30°C to 85°C operating temperature range. This sensor features 50.8 Lines Per Inch (LPI) resolution and comes in a 2.6mm x 2.5 mm x 0.8mm package size. The NJL5820R sensor is used to detect the rotation of the focus ring, operation dial, and encoder plate.