Features: -Power consumption of the Power Meter Monitor: 0.5W -Operating voltage: 230 VAC -Display frequency: 50 Hz -Current of operating: max 16A -Wide voltage range: 230V-250V -Watts display is 0W to 9999W; but the actual power display (Watts) is 0~3680W -Time display range: 0 seconds to 9999 days -Voltage display range: 0V~ 9,999V -Current display (Amps): 0.000A~16.000A -Frequency display: 0Hz~9999Hz -Price display range: 0.00COST/KWH99 ,99COST/KWH -Total KWh and cost display: 0.000KWh-9999KWh, 0.00COST----9999COST Overload alarm: when current exceeds 16A or power exceeds 3680W , the overload alarm symbol flashes. When the detected power value is less than 1.0W, it is regarded as local power consumption and the time is not accumulated. Operating Current: 16A Measurement Accuracy: 2% Packing List : 1*power meter 1*user manual 1*screwdriver Safety alarm function - The LCD screen will display the overload warning. You can set a power alarm value. When the power exceeds the set value, exceeds 3680W or the current exceeds 16A, the OVERLOAD icon will flash on the LCD to notify the user that the family is protected. Electrical safety, which is very useful for reducing energy consumption and ensuring safety. Multi-function socket - Monitor device power (w), accumulated electricity consumption (kwh), accumulated electricity cost (cost), carbon dioxide emissions (KgC02), days of electricity ( DAY), voltage (V), ampere (A) and power factor (POWER FACTOR), AC frequency (Hz) and minimum and maximum power, ideal for energy monitoring in household appliances.Real-time monitor power consumption and flow based on daily consumption records to ensure reasonable power consumption, save you energy and money. Two methods alternatives - Single Rate mode and Dual Rate mode can be set according to the instructions. Double rate is commonly used for time division. Data Hold Function - The memory data hold function allows you to disconnect the device from the electric meter or unplug the electric meter from the outlet. The latest data is saved and the meter can be moved and viewed without losing data.