Banner Engineering SM312FPH Mini-Beam Fiber Optic Sensor

The SM312FPH Mini-Beam Fiber Optic Sensor from Banner Engineering is a compact plastic-fiber model in the MINI-BEAM family that uses a red visible LED (650 nm) and fiber optics to sense targets in tight spaces. It operates on 10–30 V DC and provides a bipolar output configuration with both an NPN and a PNP channel, typically delivered with a 2 m (6.5 ft) cable. This plastic-fiber variant is designed for high-power fiber applications and is documented as SM312FPH in Banner’s literature, distinguishing it from glass-fiber SM312 models. Depending on the fiber installed, the sensing range is determined by the chosen fiber—range details vary with the fiber type and length, so the setup can be tailored to the installation. Common applications include presence/absence sensing on conveyors and packaging lines or other environments where optical access is constrained and a fiber probe can reach the target. As part of the MINI-BEAM line, the SM312FPH emphasizes a small footprint suitable for tight assemblies while offering the versatility of plastic-fiber optics with a visible red emission. The model is listed across Banner’s site and distributor catalogs with the 10–30 V DC input and two-output configuration, making it easy to integrate into existing control schemes.