The SICK UM12-1172261 is an ultrasonic sensor from the UM12 series, delivering a 4...20 mA analog output proportional to the distance to the target. It covers a sensing range from 20 mm minimum up to 150 mm maximum, making it suitable for level monitoring, presence detection, or positioning in tight spaces where a short sensing window is needed. The brass nickel-plated housing with PBT sensing face is sealed to IP65/IP67 — fine for washdown zones or outdoor enclosures as long as the M12 connector is properly mated. Termination is via a standard M12 4-pin connector (male), which matches the common sensor interface on most IO-Link masters or analog input modules. No special cable or adapter needed for a typical panel drop.
The closest functional peer in the same UM12 series is UM12-1172211. Same housing, same sensing distance (20-150 mm), same voltage range, same IP rating, same M12 4-pin connector. The only difference is the output: UM12-1172261 gives a 4-20 mA analog signal, while UM12-1172211 switches a PNP discrete output. If your panel was wired for a PNP discrete sensor, the analog output of UM12-1172261 will not drive a digital input — you would need an analog input card or a signal conditioner. The connector pinout is the same, so the mechanical swap is easy, but the wiring and input module must match the analog signal type.