Industrial MS4324BR Programmable Logic Controller Module

The STI MS4324BR Minisafe light curtain receiver (42672-0240) is a 24-inch safety sensor that serves as the receiving half of STI’s MS4300 Minisafe light curtain system. When paired with the MS4324BX transmitter, it creates a guarded optical curtain used to detect an object or person crossing the protected field and to trigger a safe-stop in the connected safety circuit. This model is intended for industrial environments where machine guarding is essential, such as around presses, cutting equipment, conveyors, or robotic work cells. The 24-inch receiver is identified by the 42672-0240 part number and is a member of the MS4300 Minisafe family, designed to withstand the demands of factory floors and provide dependable performance in alignment-heavy installations. Typical installations benefit from the Minisafe design’s straightforward wiring and alignment features, enabling reliable detection of beam interruption with quick setup and consistent operation across a guarded zone. The MS4324BR is commonly found in refurbished or aftermarket listings, where buyers seek a like-for-like replacement for existing MS4300 systems, and it contributes to maintaining compliance with safety standards by ensuring prompt mechanical shutdown when a protected beam is broken.