The Omron E3FB-RN11 2M Photoelectric Sensor offers Cylindrical axial, Retro-reflective, 4000 mm sensing distance, NPN Output, Pre Wired Cable,2M Length, Red LED Light source, 10 to 30 VDC Power supply voltage, Light-ON/Dark-ON mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3FB Series.