STI 43268-05 MS4320B Light Curtain Relay Control is a safety-interface module in STI’s MiniSafe MS4320B line that translates beam status into relay outputs for machine controls. It is intended to be used with MiniSafe MS4320B light curtain transmitters and receivers to support safe-stop and restart logic in guarded work zones. Common applications include guarding automated lines, presses, conveyors, and robotic cells where a compact relay interface is required to manage beam-sensing safety logic.
