Sick WT12L-2B550 Photoelectric Sensor NPN PNP

Compact Laser Photoelectric Sensor

The Sick WT12L-2B550 is a rectangular photoelectric proximity sensor with background suppression designed for detecting small objects and objects moving at high speeds. It uses a visible red laser light source with a wavelength of 650 nm and a spot size of Ø 0.2 mm at a 100 mm focus distance. The sensor operates on a supply voltage of 10 V DC to 30 V DC and offers selectable light or dark switching via an L/D control cable.

Suited For Precision Automation Tasks

This sensor suits applications requiring accurate detection of small parts or fast-moving targets within a 30 mm to 200 mm range, such as packaging lines or assembly equipment. Its IP67 and IP69K enclosure ratings support use in harsh wash-down environments. Buyers needing longer sensing distances, analogue output, or IO-Link communication should look at alternative sensor models.

Sensing Range And Output Headroom

The device comfortably handles detection tasks up to a maximum sensing range of 200 mm with a response time of 200 µs and a switching frequency of 2,500 Hz. It provides both PNP and NPN switching outputs with a maximum output current of 100 mA. The laser classification is Class 2 per EN 60825-1:2014 and IEC 60825-1:2007, and the metal housing weighs 130 g including two supplied mounting clamps.