DIGITAL MONITORING RELAY SPEED MONITORING FROM 0.1 TO 2200 REV/MIN OVERSHOOT AND UNDERSHOOT AC/DC 24 TO 240V DC AND AC 50 TO 60 HZ STARTUP DELAY 1 TO 900S TRIPPING DELAYED 0.1 TO 99.9S HYSTERESIS 0.1 TO 99 REV/MIN 1 CHANGEOVER CONTACT W. OR W/O ERROR LOG SPRING-LOADED TYPE