ABB SENTRY TSR20 24VDC 3no 1nc Off delay timer

Safety expansion timer with delayed relay outputs 3NO+1NC, +24VDC power supply and screw terminals. For monitoring of safety devices with contacts, 1 or 2 equivalent channels, and safety devices with OSSD outputs. OFF-delay time (0,5s or 1,5s) selectable by switch on the front.