Basic switch without actuator head Plastic housing 50 mm wide ASIsafe integrated AS-i status: 1:F-IN1, 2:F-IN2 3:AS-i/FAULT Slow-action switching elements 1Ö with M12 plug 4-pin Channel 1 to Ö, channel 2 to M12 socket right SIRIUS 3SF12 mechanical safety switches for position monitoring of movable guards with direct connection to the AS-Interface bus system.The mechanical safety switches are compact thanks to integrated ASIsafe electronics, which require low power consumption. 3D-coded actuators guarantee a high level of protection against tampering. LEDs indicate the current status of the device. The switches can be used for the highest safety requirements in accordance with PL e or SIL 3 and are available in various housing sizes in plastic or metal. Variants with separate actuator, with guard locking or as safety hinge switches are also available. A series with a high degree of protection IP69K rounds off the portfolio and, depending on the version, actuator heads, separate actuators, plugs and other mounting/connection accessories are available as accessories.safety is a SIRIUS business.