The SICK UM30-215111 is an ultrasonic proximity sensor from the UM30 series, with a PNP normally-open output and a sensing range of 600 mm to 6 m. It operates on 9 to 30 VDC and switches at 3 Hz — that's three detection cycles per second, which is enough for counting parts on a moderate-speed conveyor or level monitoring in a tank, but not for fast-moving targets on a high-speed line. The housing is brass with nickel plating and a polybutylene terephthalate (PBT) face, sealed to IP65 and IP67, so it handles washdown and dust without issue. Termination is an M12 5-pin connector — no pigtail to strip, which speeds replacement on a live line.
The M12 5-pin connector mates with standard cordsets; no special tools needed. The brass housing with nickel plating and PBT face is suited for washdown environments — IP65/IP67 means it survives hose-down cleaning in food or beverage lines. The 3 Hz switching frequency limits the sensor to targets moving at moderate speeds; for faster applications, consider a higher-frequency sibling in the UM30 family.