SICK WT12L-2B550A02 Photoelectric Proximity Sensor

WT12L-2B550A02 is a compact SICK W12-2 laser photoelectric sensor that uses background suppression to reliably detect small objects over a 50 mm to 290 mm range, with a 650 nm visible red laser and a 0.3 mm spot at 180 mm.

Housed in a 15 × 49 × 41.5 mm rectangular enclosure and weighing 130 g, it mounts via a standard M12, 5‑pin plug and offers an IP67 rating for rugged industrial use.

Power is 10–30 V DC with about 55 mA current draw, and the device provides digital outputs described as PNPNPN with a maximum load current of 100 mA per output; optical response time is ≤200 µs and the device can switch up to 2,500 Hz.

Safety and compliance include EN 60825-1 (laser class 2) with a caution to avoid looking directly into the beam, and the sensor is rated for ambient operation from –10 °C to +50 °C (storage –25 °C to +75 °C).

Typical applications cover precise detection of small or fast-moving objects in automated lines, where background suppression helps prevent false triggers in cluttered environments.