MISOL 1 pcs of US Plug Ammeter Energy Power Watt Voltage Volt Meter Monitor Analyzer power meter (ammeter),US plug. not only provides power connection for the electric appliances,but also records operations of the appliances. display includes:voltage of power supply,real-time running power,electricity consumption,electricity cost,operation time it provides analysis on real-time runningpower and gives out alarm automatically once abnormal operation occurs Functions: 1. AC voltage: 90~150V AC/60Hz; 2. Power: 0.7~3000W; 3. Watt-hour: 0.0001~999.9kWh; 4. Electricity cost: $ 0~9,999; 5. Ratio of operation condition: 0~100% ; 6. Running time: 0~60 mins to 24 hours to 999 days. (0~24h~9999d)