Product Description
SICK WT12L-2B551 Photoelectric Sensor
The SICK WT12L-2B551 is a high-performance photoelectric proximity sensor engineered for demanding industrial applications. It features a precise Class 1 laser light source for superior object detection and reliable background suppression, ensuring accurate performance regardless of object color or surface. Housed in a robust zinc diecast metal enclosure with an IP69K rating, this sensor is built to withstand harsh industrial environments, including high-pressure washdowns. With an adjustable sensing range up to 350 mm and a user-friendly potentiometer for setup, the WT12L-2B551 provides a versatile and dependable solution for tasks in packaging, logistics, and machine automation.
Technical Specifications:
- Sensor principle: Photoelectric proximity sensor, Background suppression
- Sensing range max.: 20 mm … 350 mm
- Light source: Laser, red (Class 1, EN 60825-1)
- Switching output: PNP, Light/dark switching (selectable)
- Connection type: Male connector M12, 4-pin
- Supply voltage: 10 V DC … 30 V DC
- Housing material: Metal, Zinc diecast
- Enclosure rating: IP66, IP67, IP69K

SICK WT12L-2B551 Photoelectric Sensor
SICK WT12L-2B551 (1047958) photoelectric sensor with precise laser background suppression, 350mm range, PNP output, and a rugged IP69K metal housing. Ideal for reliable object detection in industrial automation.





