Product Model

WTB9L-3P2491

Manufacturer

sick

Key Features

1High Accuracy Detection: Detects objects with 90% remission factor on standard white surfaces.
2Long Service Life: Average service life of 50,000 hours at +25°C ambient temperature.
3Background Suppression: Enhances detection by suppressing background reflections.
4Compact Design: Dimensions are 12.2 mm x 52.2 mm x 23.6 mm, making it ideal for space-constrained applications.
5Robust Connectivity: Features a male M12, 4-pin connector with PNP output for reliable connections.

Detailed engineering parameters based on manufacturer documentation

Parameter	Value	Parameter	Value
Functional principle	Photoelectric proximity sensor	Functional principle detail	Background suppression
Dimensions (W x H x D)	12.2 mm x 52.2 mm x 23.6 mm	Housing design (light emission)	Rectangular
Mounting hole	M3	Sensing range max.	25 mm ... 400 mm
Sensing range	25 mm ... 400 mm	Type of light	Visible red light
Light source	Laser	Light spot size (distance)	Ø 0.9 mm (230 mm)
Wave length	650 nm	Laser class	2 (IEC 60825-1 / CDRH 21 CFR 1040.10 & 1040.11)
Adjustment	Potentiometer, 5 turns	Special applications	Detecting small objects
Supply voltage UB	10 V DC ... 30 V DC	Ripple	< 5 V
Current consumption	30 mA	Switching output	PNP
Output function	Complementary	Switching mode	Light/dark switching
Output current Imax.	≤ 100 mA	Response time	≤ 1 ms
Switching frequency	500 Hz	Connection type	Male connector M12, 4-pin
Circuit protection	A7)#!#B8)#!#C9)	Protection class	III
Weight	13 g	Housing material	Plastic, VISTAL®
Optics material	Plastic, PMMA	Enclosure rating	IP66#!#IP67#!#IP69K
Ambient operating temperature	–10 °C ... +50 °C	Ambient operating temperature extended	–30 °C ... +55 °C
Ambient temperature, storage	–30 °C ... +70 °C	UL File No.	NRKH.E181493

Specifications may be subject to change without notice