The multifunction socket can calculate the cost of electricity and simultaneously measure the power consumption, voltage, current and timing of electrical appliances. Features:LCD screen design, easy to read the data and know the working situation.It has advanced history bar graph feature days / weeks / months of daily consumption. By pressing the ?ENERGY? button several times, the LED display shows voltage, current in amps, wattage, frequency and power factor . Simply plug the player into the wall, then plug your device into the outlet. Use only indoors, in dry conditions and under maximum load. Features: Material: PC Plug type: EU, US, UK (optional) Operating voltage: EU: 230V ac US: 120V ac UK: 230V ac Frequency display: EU: 50HzUS: 60Hz UK: 50Hz Wide voltage range: EU: 200V-250V US: 110V-130V UK: 200V-250V Operating current: EU: Max 16A US: Max 15A United Kingdom: Max 13A Wattage display (watts): EU: 0W-3680W US: 0W-1800W UK: 0W-2900W Current display (amps): EU: 0.0A-16.0AUS: 0.0A-15.0AUK: 0.0A-13.0A Price display range: 0.00 / KWH-99.99 KWH Total display KWh and cost: 0.000KWH-9999KWH, 0.00 -9999 Battery: 2 x 1.5V LR44/AG13 button cell batteries (included) Item size: 184 * 75mm / 7.24 * 2.95in Package Weight: 235g / 8.29ounce Package size: 160 * 80 * 80mm / 6.3 * 3.15 * 3.15in Packing List: 1 * Diagram Power Measuring Socket! 1 * User Manual 1 * User Manual