This power meter is a monitoring and testing instrument that determines the power consumption of a connected device and the cost of the electricity consumed. It helps users track their electricity consumption and reduce their electricity bill and carbon emissions. Features: Excellent for monitor Power Consumption: Used to measure the power consumption, current, voltage, power and cost of the connected device, saving energy and money.< br/> 7 display modes: it can display time, watt, cost, cumulative electric quantity, voltage, frequency, current, power factor, minimum power, maximum power and the price. Large LCD display: easy to read and read No backlight / With backlight optional. Electricity price setting: you can set the price of the electricity electricity according to the current state in 00.00 COST / KWh ~ 99.99 COST / KWh. Overload setting: when the current charging power exceeds the maximum. charging, the letters "OVERLOAD" on the LCD will keep flashing to remind you. Reset function: can reset the abnormal display or no button response. Built-in battery : Built-in rechargeable battery to store electricity and save memory settings in case of power outage. Features: Material: PC Plug Type: EU Plug / US Plug / UK Plug (Optional) LCD Type: With Backlight / No Backlight (optional) Working voltage: 230V ~ 250V (EU) / 230V ~ 250V (UK) / 110V ~ 130V (US) Display range: 0 seconds ~ 9999 days Display in watts (watts): 0W ~ 9999W Voltage display range: 0V ~ 9999V Frequency display: 0Hz ~ 9999Hz Minimum/maximum power 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 technical parameters EU Plug: 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 technical parameters UK Plug: Operating voltage: 230V, 50Hz Operating current: Max. 13A Current display (amps): 0,000A ~ 13,000A Battery: Built in 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 Package List: 1 * Power Meter 1 * User Manual (English)