Digital monitoring relay Voltage monitoring, 22.5 mm from 17-275 V AC/DC 0vershoot and undershoot self-supplied 50 to 60 Hz DC and AC Noise pulses delay 0.1 to 20 s Hysteresis 0.1 to 150 V 1 change-over contact with or without fault buffer screw terminal Successor product for 3UG3534, 3UG3535