The Omron E3Z-D81 0.5M Photoelectric Sensor offers Diffuse-reflective, 1m Sensing distance, NPN Output, Pre Wired Cable, 0.5M Length, Infrared LED (870 nm) Light source, 12 to 24 VDC Power supply voltage, Light-ON/Dark-ON selectable mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3Z Series.