2pcs Dual Rate Electricity Usage Monitor With Backlight LCD Display High Accuracy Power Consumption Meter For Electrical Equipment Monitoring. Specification: Type: Standard: European. Color: White. Plug: EU. Product Type: AC Meter. Working Principle: Electronic. Features: High accuracy / 7 modes: Overload,  Accumulated zest, Max/Min power, Watt, Power factor, Electricity, Frequency. LCD screen with Background lighting: Thanks to the backlight， the numbers on the screen are clearly visible even in dark places or in tight corners. In the event of a power failure, the meter retains its data and settings for up to 3 months as long as the emergency power source is fully charged. Package included: 2 x Electricity Usage Monitor