Usage Tips:Meter functions and 7 modes: measurement and calculation of energy consumption and cost of connected devices. Calculation of consumption in kWh, high performance tolerance up to 16A, compatible with 230 V AC. Storage and backlight: large LCD screen with wide viewing angle and clear backlight. The measured values and measurement parameters can be remembered even if the meter is removed from the socket. High precision and overload protection: Built-in high precision current sensor. When the total power exceeds the display's rating, the LCD displays "Overload" and beeps to warn the user. Suitable for a wide range of devices such as computers, game consoles, printers, televisions, set-top boxes, routers, hi-fi equipment, DVD/Blu-ray players or espresso machines. Reliably detects power consumption of home and office electronic devices. Package includes: 1 digital wattmeter plug (French plug), 1 user manual. (Other items in the picture are props and are not included). Please note that 1 The size is measured manually, there may be an error of 1 at 3 cm, I hope you understand! 2 Photos are different due to monitor calibration. 2 Due to different monitor calibration, the color of the item displayed in the photo may be showing slightly different on the monitor's monitor. your computer.