Voltage monitor, product range: measuring and monitoring relays EMR, monitoring of: overvoltage, undervoltage, overvoltage and undervoltage (window), voltage measuring range: 3 - 30, 5 - 60, 30 - 300, 60 - 600 V, supply voltage: 24 - 240 V AC, 50/60 Hz, 24 - 240 V DC, installation position: any, fastening: snap-on mounting rail IEC/EN 60715, width: 22.5 mm, standards and regulations: UL508, CAN/CSA C22.2 No.14, GL, EAC, CCC, RMRS, RCM