Balluff BLS 12M-XX-1RD-S4-L Photoelectric Sensor

Balluff BLS 12M-XX-1RD-S4-L is the emitter (sender) half of Balluff’s through‑beam photoelectric sensor pair, built in a compact Ø12 mm, 70 mm long M12 housing. The sender uses a nickel‑plated brass body with a PMMA sensing face, IP67 protection, and a four‑pin M12 connector (S4) for rugged industrial wiring, weighing about 30 g. It emits red light for long‑range detection and supports a Sn (sensing distance) of up to 5,000 mm in a through‑beam configuration, making it ideal for monitoring gaps, conveyors, or up/downstream tooling when paired with Balluff receivers. Electrical readiness is 24 V DC nominal (10–30 V DC supply) with reverse‑polarity protection, typical current draw under 20 mA, and a compact form factor that suits tight installations. The device is specified for operation in demanding environments (−15 to +55°C) and aligns with the 12M through‑beam family’s standards, ensuring reliable light‑path integrity across industrial applications such as part presence detection, pallet handling, and machinery safety interlock sensing when used with the corresponding Balluff receiver unit.