DIGITAL MONITORING RELAY SPEED MONITORING FROM 50 TO 60 REV/MIN OVERSHOOT AND UNDERSHOOT SUPPLY VOLTAGE: AC/DC 24V DC AND AC 50 TO 60 HZ NO GALVANIC ISOLATION FROM MEASURING CIRCUIT STARTUP DELAY 1 S TRIP DELAY 0.1 S NO HYSTERESIS 1 CO CONTACT AUTOM. RESET SCREW TERMINAL