Here’s a concise breakdown of the WTB4S-3P2161 photoelectric sensor from SICK :

• Functional Principle: Photoelectric proximity sensor with background suppression.

• Sensing Range: 4 mm to 180 mm.

• Light Source: PinPoint LED, visible red light.

• Switching Output: PNP, light switching.

• Connection Type: M8, 3-pin connector.

• Housing Material: ABS plastic.

• Adjustment: Potentiometer with 5 turns.

• Protection Class: IP66/IP67.

• Operating Temperature: -40°C to +60°C.

• Response Time: <0.5 ms.

• Switching Frequency: 1,000 Hz.