Universal safety relays

Sentry USR models are universal safety relays and the same model can be used with most types of safety devices which reduces stock and saves warehouse space. Maintenance personnel also have fewer models to learn. All Sentry USR models have a display on the front for simple configuration. The display also offers extensive indication about the status and error messages for the relay. Sentry USR10 and USR22 are each suitable for monitoring emergency stop buttons, safety switches, OSSD-devices, two-hand devices and contact mats/bumpers/edges.