Usage Tips:Electricity Consumption Measuring Socket Power Meter Energy Meter Voltage Wattmeter Power Analyzer 100% and High Quality Product information: Name: Chart power measuring socket Battery: Built-in 2 button batteries Product size: 160*80*80mm/4.8*2.4*2.4in Technical Parameters: Normal operating voltage: 230Vac/50Hz 240Vac/50Hz; Load current: MAX 16A; Rated power: 3680W Voltage accuracy: +/- 1% Current accuracy: +/- 2% Power accuracy: +/- 2% Wide voltage working range: 175Vac 264Vac; Frequency range: 47 63HZ Timing display range: 0 seconds to 9999 days 23:59 Power display range: 0.005W 9999W Voltage display range: 0.0V 9999V; Current display range: 0.000A 9999A; Maximum power display range: 0.0W 9999W; Electricity price display range: 0.00COST/KWH 99.99COST/KWH; Cumulative power consumption: 0.000KWH 9999KWH, The accumulated electricity fee display range: 0.00COST 9999COST; The price range can be set: 00.00COST/KWH 99.99COST/KWH Total carbon dioxide total: 0.000KGCO2 9999KGCO2 Features: The multi-functional sockets can calculate the electricity cost and measure the power consumption, voltage, current, timing of the electrical appliances at the same time. Packing list: 1pc/pack