Sick GRL18S-P2438 Photoelectric Sensor

The Sick GRL18S-P2438 Photoelectric Sensor uses a dual-lens retro-reflective principle to provide accurate detection of objects across a wide sensing range of 0.06 m to 6 m, extending up to 7.2 m with optimal reflectors. Its radial optical axis and M18 cylindrical housing make it suitable for installations where the sensor must be positioned at a right angle to the detection surface. With a clearly visible red PinPoint LED light source operating at 650 nm, and a 175 mm light spot at 7 m, alignment is quick and precise even at long distances.

The sensor operates on a standard 10 V to 30 V DC supply and consumes just 30 mA, making it energy efficient. It delivers a PNP switching output with light/dark switching modes, and responds within 500 µs, supporting a fast 1,000 Hz switching frequency—ideal for high-speed production environments. Its M12, 4-pin male connector ensures secure and standardized electrical connection. The durable ABS housing and PMMA optics are IP67 rated, offering strong protection against dust, moisture, and harsh operating conditions. Designed to operate reliably in temperatures from –25 °C to +55 °C, the GRL18S-P2438 is trusted by automation engineers for consistent, long-life operation with minimal maintenance.

Built with simplicity and reliability in mind, the Sick GRL18S-P2438 is supplied with fastening nuts and includes LED status indicators for power and output signal verification. Whether in manufacturing, warehousing, or packaging, this sensor delivers exceptional detection accuracy and installation flexibility.

The Sick WL4S-3F2130 Photoelectric Sensor is commonly used where precision and compact size are important. In bottling plants, it accurately detects the position of small or transparent bottles moving at high speed. It plays a critical role in pick-and-place systems by ensuring components are present before robotic arms proceed. On automated packaging lines, this sensor helps confirm that every carton or packet has arrived correctly before sealing or labeling.

For Indian maintenance engineers, this sensor reduces troubleshooting time with its clear status LEDs and reliable detection even in dusty or humid environments. Its compact body allows it to be mounted close to moving parts, which is helpful in cramped panels or machines with limited space. With fast response and consistent output, it maintains production accuracy and lowers the risk of errors or jams.

For students and young engineers, the WL4S-3F2130 offers a hands-on learning opportunity to understand how optical sensing, reflection principles, and electronic switching work together in real factory applications. Studying how this small device enables entire machines to function smoothly teaches practical lessons in automation, mechatronics, and sensor integration.