Non-contacting SIDENT safety switches with BG- and UL-Certification from Klaschka Elektronik + Automation, have also been certified according to UL 508 for USA and Canada. These safety switches work non-contacting with a particularly high switching distance of 20mm. In combination with an actuator they are very manipulation-safe, can be easily mounted and have high tolerances against vibrations, are robust and maintenance-free against dirt collection. Fields of applications are e.g.: monitoring of safety fences, -doors and roller gates, protective covers at machines and systems, the monitoring of safe positions of robots, saws and processing machines, crushing gears and mill works in dusty and dirty surroundings.