SINOTIMER SDM008 Rail Type AC Multifunctional Digital Voltage And Current Power Monitor1. Basic current: 100A 2. Reference voltage: 50 300V 3. Frequency: 50 60Hz 4. Display mode: digital display 5. Parameters: Voltage: measuring range: AC50 300V; starting voltage: 50V; measuring accuracy: + 1 percent Current: measuring range: 0. 02 100A; starting current: 0. 02A; measuring accuracy: + 1 percent Active power: measuring range: 0. 5 30kW; starting current: 0. 5W; measuring accuracy: + 1 percent Power: measuring range: 0 1999kWh; overflow