The Omron E3FA-TN22 Photoelectric Sensor offers Cylindrical axial, Through-beam, 15m sensing distance, NPN, 10 to 30 VDC Power Supply Voltage. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3FA Series and includes an Emitter (E3FA-TN22-L) and Receiver (E3FA-TN22-D), it utilizing a Infrared LED Light source.