The STI 42687-0320 42672-0320 MS4300 MiniSafe-B Light Curtain set offers reliable safeguarding for industrial applications. This set includes both the transmitter and receiver units, each featuring a 32-inch length, designed to ensure personnel safety by creating an invisible protective barrier that stops hazardous motion upon interruption. The optical safety sensors are ideal for environments where human-machine interaction is frequent and safe intervention is necessary.