Hours Run Counter (BZ142-1),hour meter,time counter AC Ratings: AC ... , 48V, 110V or 240V Frequency: 50Hz or 60Hz DC Hours Run Counter (BZ142-1),hour meter,time counterAC Ratings: AC 24V ... : 48 x 48 x 40mmTerminals: Connections to terminal block. Hours Run Counter (BZ142-1),hour meter,time counter