Balluff BOS18M-PS-1XA-E5-C-S4 Photoelectric Sensor

Balluff BOS18M-PS-1XA-E5-C-S4 is a diffuse-mode photoelectric sensor housed in a rugged M18 metal body, designed for non-contact detection of small parts by diffuse reflection with a 100 mm sensing range. It uses an infrared LED at 880 nm and provides a PNP normally-open output that is activated by light (light-on) with a rated operational current up to 200 mA and a supply range of 10–30 V DC. The device draws less than 20 mA no-load and exhibits a voltage drop under load of less than 2.5 V, with built-in short-circuit and reverse-polarity protection and an insulation voltage of 250 V AC. The housing is nickel-plated brass with a PMMA sensing face, and the sensor is IP67 rated for harsh environments; it features a yellow LED indicator to show switching state. The connection is via a 4-pin M12 (S4) connector. Typical performance includes a 5 ms response time and a switching frequency of 100 Hz, supporting rapid part detection on conveyors or automation lines, while ambient-light rejection up to 5 kLux enables operation in bright factory settings. This model is part of Balluff’s BOS 18M family, engineered for diffuse-sensing tasks in compact cylindrical form factors, delivering reliable sensing for presence detection across surfaces with varying reflectivity.