STI MS4308B Receiver Transmitter Curtain Sensor

STI MS4308B-2R Minisafe-B light curtain receiver, the receiving half of the MS4300B-2 Minisafe-B safety beam curtain, is an IP65-rated unit delivering 0.75-inch resolution across a 30-foot sensing range and an 8-inch (203 mm) coverage height with a 6-degree effective aperture angle. This MS4308B-2R designation identifies the receiver component in the Minisafe-B MS4300B-2 series; alternate part number 42672-0080 is associated with this variant, and the model is noted as discontinued by the manufacturer. As the receiver element, it processes the aligned light beam from the corresponding Minisafe-B transmitter to form a safety curtain across an opening, suitable for guarding machine access points in appropriate industrial environments.