Wieland Electric Safe relay Safety Relays are compact safety devices developed for reliable monitoring of individual machine-safety functions. The range can be used for safety doors and guards, locking devices, access monitoring, emergency-stop functions, two-hand controls and speed, standstill or position monitoring. Plug-in screw or Push-In terminals and large LED status indicators simplify commissioning and diagnostics. The portfolio includes basic safety relays, time-delayed versions, contact expansion relays and drive-monitoring solutions. Depending on the model, the range supports safety applications up to PL e and SIL3 and AC/DC load switching up to 8 A.