SICK MGSS120-12 Magnetic Safety Switch

The SICK MGSS120-12 is a compact Light Curtain Sender (emitter) used in SICK safety light curtain systems to create a protective sensing field around machinery. This 120 mm version is the standard variant with 30 mm beam resolution, designed to be paired with a matching Receiver unit to enforce machine stops when the guarded area is breached. It includes a manual reset and backchecking, with no muting module built in, aligning with guard configurations that require explicit re-arming after a fault. The MGSS120-12 is listed as discontinued by the manufacturer, so compatibility with alternative MGSS emitters or newer safety solutions should be checked before purchase. Given its role as a dedicated sender, it is typically deployed in automation environments where a fixed beam curtain is used to guard access points such as gates or access doors, ensuring a safe stop condition without muting during normal operation.