Sick VTB180-2P42412 Photoelectric Sensor

The VTB180-2P42412 Photoelectric Sensor from Sick is a photoelectric proximity sensor designed with background suppression for reliable object detection without interference from distant or reflective surfaces. It features a robust M18 cylindrical housing made from nickel-plated brass and PC, with compact dimensions of 18 mm x 18 mm, making it easy to install in tight industrial spaces. The optical system operates along an axial optical axis and emits a focused visible red light beam at a wavelength of 632 nm through a high-efficiency LED light source. With a narrow 2.8° dispersion angle, the beam forms a precise Ø 15 mm light spot at 300 mm, enabling consistent detection accuracy across varied object colors and materials.

Offering a flexible sensing range of 30 mm to 200 mm (max. up to 350 mm), this model is ideal for close-range detection tasks with variable backgrounds. The sensor is powered by a stable 10 V DC to 30 V DC supply and draws a modest 30 mA current. It includes a 4-turn potentiometer for adjusting the sensing range, providing high adaptability without complex calibration. The output is configured as PNP, supporting both light ON and dark ON switching modes selectable via the control cable. With a fast response time of ≤ 0.5 ms and a switching frequency of 1,000 Hz, the sensor performs exceptionally in fast-moving conveyor or sorting applications. Its IP67-rated enclosure ensures dependable operation in dusty or wet industrial settings, and the M12 4-pin male connector provides secure, vibration-resistant connectivity. The use of PMMA plastic optics maintains clarity and performance across temperature extremes ranging from –25 °C to +55 °C, and even storage conditions down to –40 °C.

The Sick WL4S-3F2130 Photoelectric Sensor is widely used in automated systems where real-time object presence detection is essential. Whether you're counting packaged units on a conveyor, triggering a labeling machine, or preventing a machine jam, this sensor responds quickly and accurately—without requiring physical contact with the object.

For junior engineers or plant technicians, the sensor’s visible red light makes alignment simple during installation. There's no need for special training or equipment—just plug it into the control system and set the detection range using the onboard potentiometer. The compact cylindrical body fits easily on existing brackets or fixtures, saving installation time.

For senior engineers, the sensor offers stability across temperature and lighting variations, ensuring that once it’s set, it runs reliably without frequent readjustment. Its fast response time of 0.5 milliseconds and high switching frequency allow it to keep up with rapid production lines. Engineering students can also benefit by understanding how background suppression helps distinguish real objects from environmental noise, preparing them to build smarter systems in the future. In all, this sensor is a valuable asset in every smart factory looking for speed, stability, and simplicity.