ABB Jokab Safety Sentry TSR10 and Sentry USR models offer advanced timer functions such as off-delay, on-delay, time bypass and time reset. The time is set via the display, from 0 to 999 seconds with an accuracy of ± 1%. Sentry TSR10 is suitable for e-stop buttons, safety switches and OSSD-devices. Sentry USR10 and USR22 are suitable for most safety devices, i.e. emergency stop buttons, safety switches, OSSD-devices, two-hand devices and contact mats/bumpers/edges. Main features include Up to PL e/SIL3; Advanced timer functions 0 to 999 seconds: Precision of 0.1 second up to 100 seconds and 1 second over 100 seconds & Accuracy of ± 1%; Simple configuration using display to select between preset configurations and custom configuration; Display with extensive status information; Removable terminal blocks & Extensive LED indication.