This Siemens HF221S, 304SS HEAVY DUTY SAFETY SWITCH,30A/240V, NO BOX is a sensor/switch manufactured by Siemens. It senses object presence, distance, or position (or switches an electrical circuit) and converts that into an output signal for machine control or monitoring. Key specifications noted on this listing include 30A. It is commonly in packaging machinery, material handling, and automated inspection systems.
