Product details. Specifications: - Electric meter display consumption: 0.5W Operating voltage: 230VAC Frequency display: 50HZ Operating current: 16A max Wide voltage range: 230V-250V Set power display (Watts) for 0W~9999W; but the actual displayed power (Watts) is 0~3680W Time display range: 0 seconds~9999 days Voltage display range: 0V~9999V Current display (Amps): 0.000A~16.000A Power display frequency: 0Hz~9999Hz Price display range: 0.00COST/KWH99.99COST/KWH Total KWh and cost display: 0.000KWh-9999KWh, 0.00COST----9999COST Overload alarm: When the current exceeds 16A or the power exceeds 3680W, the Overload Alarm symbol flashes. When the detected power value is less than 1.0 W, it is considered local consumption and no time is accumulated. Operating current: 16A Measurement accuracy: 2%. Overload warning LCD display: Power alarm value can be set. When the power exceeds the set value, exceeds 3680W or the current exceeds 16A, the LCD will flash the OVERLOAD icon to warn the user that the home is protected. Safe use of electricity is very helpful in reducing energy consumption and ensuring safety. Multifunction socket: monitors the power of the device (w), cumulative electricity consumption (kwh), cumulative cost of electricity consumption (cost), CO2 emissions (KgC02), days of consumption electricity (DAY), voltage (V), amperage (A) and power factor (POWER FACTOR), AC frequency (Hz) as well as minimum and maximum power, ideal for energy monitoring in domestic appliances. Real-time monitoring of electricity consumption and flow, based on daily electricity readings, ensures reasonable electricity usage, saving you electricity and money. Two options can be set according to the instructions. Single rate mode and double rate mode. The double rate is commonly used for time division. Data retention. Keeping data in memory allows you to disconnect the device from the meter or unplug the meter from the outlet. The latest data is saved and the meter can be moved and viewed without losing data. Packing list. 1* power meter 1* user manual 1* screwdriver security alarm function