Sick GTB6-P3211 Photoelectric Sensor

The GTB6-P3211 from Sick is a highly accurate photoelectric proximity sensor featuring background suppression for stable object detection even in challenging environments with varying background reflectivity. It operates within a defined sensing range of 35 mm to 140 mm, with a maximum range up to 250 mm, using a precision PinPoint LED that emits visible red light at 650 nm wavelength. The focused light spot, just Ø6 mm at 100 mm distance, ensures sharp detection with minimal interference. This model is powered by a 10 V DC to 30 V DC supply and maintains a low current consumption of 30 mA. It supports PNP digital output and includes a light/dark switching selector to adapt to different sensing modes. With a response time of ≤ 625 µs and a fast switching frequency of 1,000 Hz, the sensor is ideal for high-speed operations. It is housed in a 12 mm × 31.5 mm × 21 mm rectangular enclosure made of durable ABS/PC plastic and sealed to IP67, making it resistant to dust and water ingress. With a 3-pin M8 connector and robust construction, the GTB6-P3211 integrates seamlessly into automation systems. Engineers across industries trust this model for its repeatability, quick installation, and dependable operation in harsh industrial settings.

The Sick WL4S-3F2130 Photoelectric Sensor is widely used in industrial applications that require reliable and fast object detection. In packaging lines, it helps verify the presence of items before labeling or sealing, minimizing costly errors. In automotive or assembly units, it detects small components on conveyors with high accuracy, ensuring production flow without interruption. What makes this model stand out is its ability to operate effectively even when the background is reflective, dark, or inconsistent. This is particularly valuable in Indian industries where setup conditions often vary. Maintenance teams appreciate its easy mounting, visible beam for alignment, and long-term durability that reduces the need for replacements. Whether you’re an engineer setting up a new automation line or a student learning sensor applications, the WL4S-3F2130 offers a real-world example of how compact, intelligent sensors can improve system efficiency while staying cost-effective. Its performance and simplicity make it a go-to choice for modern automation challenges.