Floureon power meter energy monitor allows status tracking stand by power and usage to forecast your cost and calculate electricity expenses so as to save money for you! Various paremeters measuring Voltage, Current(Amps), Power(W), Energy (kWh), Frequency(Hz), Power Factor, Maximum Current & Power, Time Days Cost, Total kWh.

https://www.amazon.com/TS-836A-Energy-Voltage-Electricity-Monitor/dp/B00E945SJG