Manufacturer: SICK
Type: Photoelectric proximity sensor
Model: WTB4-3P2171
Part no.: 1028123

Sensing range max.: 4 mm … 150 mm 
Sensing range: 15 mm … 150 mm
Adjustment: Potentiometer, 5 turns
Supply voltage: 10 V DC … 30 V DC 
Ripple: 5 Vpp 
Current consumption: 20 mA 
Protection class: III
Digital output
Type: PNP
Output current Imax: 100 mA
Response time: 0.5 ms 
Switching frequency: 1,000 Hz 
Switching mode: Light switching
Housing: Rectangular
Design detail: Flat
Dimensions (W x H x D): 16 mm x 39.5 mm x 12 mm
Connection: Connector M8, 3-pin
Material Housing: Plastic 
Ambient operating temperature: -40 °C … +60 °C