Sick GTB6-F4211 Photoelectric Sensor

The GTB6-F4211 Photoelectric Sensor from Sick is engineered to deliver high-performance detection with background suppression, enabling precise differentiation of target objects from reflective backgrounds. Its sensing range spans from 35 mm to 140 mm, with a maximum reach of 250 mm, making it highly adaptable for short-range detection tasks. The sensor uses a visible red light PinPoint LED with a 650 nm wavelength and emits a sharp Ø 6 mm light spot at 100 mm for accurate alignment and positioning. A key highlight of the GTB6-F4211 is its mechanical spindle adjustment mechanism with 5 full turns, offering granular control over the sensing distance—ideal for setups requiring fine-tuning. It operates reliably within a 10–30 V DC supply range and consumes only 30 mA of current, ensuring energy efficiency. The PNP output supports light/dark switching with quick response times of ≤ 625 µs and a switching frequency of 1,000 Hz, suitable for fast automation lines. Housed in a robust 12 mm x 31.5 mm x 21 mm rectangular ABS/PC body and protected with an IP67 enclosure rating, this sensor is built for industrial resilience. It features a 4-pin M8 male connector for quick, reliable electrical integration. Trusted by automation engineers worldwide, the GTB6-F4211 offers a balanced combination of detection precision, compact design, and industrial-grade durability.

The Sick WL4S-3F2130 Photoelectric Sensor is widely used in industrial automation tasks where non-contact object detection is required with high reliability. In conveyor systems, it ensures the smooth flow of goods by detecting the presence or absence of parts, even when they vary in shape or surface reflectivity. Its compact housing allows easy integration into tight mechanical assemblies, making it ideal for machine builders and OEMs. For Indian maintenance engineers working on packaging, bottling, or material handling lines, this sensor provides fast response, stable detection, and long service life. It eliminates the need for manual checking, thus improving process efficiency and reducing labor dependency. Thanks to its visible red light, technicians can align it easily during installation or troubleshooting. Engineering students learning automation fundamentals will appreciate how the WL4S-3F2130 helps detect moving parts without physical contact. It introduces them to advanced sensing techniques like background suppression and switching logic. Overall, this sensor simplifies complex automation challenges and supports smart factory transformation, one detection at a time.