It operates as the receiver half of a through-beam pair, detecting the transmitter's beam across distances up to 20 m. Output is PNP with a normally-closed (1NC) contact, switching at 500 Hz with a 1 msec response time. Supply is 12-24 VDC, and the part is prewired with a 2 m bare-wire cable.
The 20 m sensing distance is the headline number — that range covers long conveyor spans or warehouse aisle detection. The 1 msec response and 500 Hz switching frequency mean it handles fast-moving parts on a high-speed line without missing a beat. The PNP 1NC output is sourcing and breaks on detection; if your PLC input card expects NPN or NO, this won't drop in without a wiring change. The plastic body with double insulation and scratch-resistant lens holds up in washdown zones (IP65/IP67 rated).