STI MS4308BX Light Curtain

STI MS4308BX Light Curtain is the transmitter half of the MiniSafe MS4300 safety-beam system (part 42687-0080). It is designed to pair with the MS4308BR receiver (sold separately) to form a two-piece safety curtain that guards access to equipment in industrial environments. This emitter in the MS4300 series carries a 0.75-inch (19 mm) resolution and covers an active sensing range from 1 to 30 feet (0.3–9.1 m), with an 8-inch (203 mm) coverage height and a 6-degree effective aperture angle to aid beam alignment in tight guard zones. The MS4300 family is manufactured in the United States, and the MS4308BX designation identifies the transmitter unit within that family. It weighs about 1 pound 3.2 ounces (roughly 0.5 kg) and is listed with the 42687-0080 model number. The MS4308BX transmitter is commonly referenced alongside corresponding MS4308BR receivers in inventories and refurbishments, reflecting its role as the emitter component of STI’s Minisafe guarding solution for machinery access points.