This power meter is a monitoring and testing instrument which determines the power consumption of a connected appliance and the cost of the electricity consumed, helping users to track their electric consumption and reduce the power bill and carbon emissions. Features: Great for Energy Consumption Monitor: used to measure the power consumption, current, voltage, power and cost of the connected appliance, helping save energy and money. 7 Display Modes: it can display time, watt, cost, cumulative electrical quantity, voltage, frequency, current, power factor, minimum power, maximum power, price. Large LCD display: easy and clear to read. No backlight / With backlight optional. Electricity Price Setting: you can set the electricity price according to the actual condition in 00.00 COST/KWh~99.99 COST/KWh. Overload Setting: when current load power goes beyond the max. load power, the letters "OVERLOAD" on LCD will keep blinking to remind you. Reset Function: it allows resetting for abnormal display or no-response of button. Built-in Battery: built-in a rechargeable battery to store electricity and save memory setting when power failures. Specifications: Material: PC Plug Type: UK LCD Type: With Backlight / No Backlight (Optional) Working Voltage: 230V~250V(UK) Timing Display Range: 0 second~9999 days Wattage Display(watts): 0W~2900W Voltage Display Range: 0V~9999V Frequency Display: 0Hz~9999Hz Minimum/Maximum Wattage Display Range: 0.0W~9999W Price Display Range: 0.00€/KWH~99.99€/KWH Total KWh & Cost Display: 0.000KWH~9999KWH, 0.00€~9999€ For EU Plug Technical Parameters: Operating Voltage: 230V, 50Hz Operating Current: Max. 16A Current Display(amps): 0.000A~16.000A For US Plug Technical Parameters: Operating Voltage: 120V, 60Hz Operating Current: Max. 15A Current Display(amps): 0.000A~15.000A For UK Plug Technical Parameters: Operating Voltage: 230V, 50Hz Operating Current: Max. 13A Current Display(amps): 0.000A~13.000A Battery: built-in a 3.6V 20mAh rechargeable NI-MI battery(included) Item Size(without plug): 6.8 * 4 * 14cm / 2.7 * 1.6 * 5.5in (L * W * H) Item Weight: 186g / 6.6oz Package Size: 15 * 8 * 7.2cm / 5.9 * 3.1 * 2.8in Package Weight: 215g / 7.6oz Package List: 1 * Power Meter 1 * User Manual(English)