1、Monitor which appliances are the killer of the high cost of energy, save energy, save your money; Reduce CO₂emissions, environmental friendly 2、The digital large backlit LCD display screen is 180° full wide view clear visible, make you easy to read and record the data, especially in the darkness 3、When the whole power exceeds the rated power 9999W of monitor, LCD will display "OVERLOAD" with booming noise to warn the user, and automatically disconnect the power 4、CO₂ Emissions(CO₂/KG), Power(W), Energy (KWh), Voltage/Hertz, Amps/Hertz, Power Factor, Minimum power and Maximum power, 8 modes for your choice 5、It will save the last datas when you remove the appliance from power meter or remove the power meter from the socket; If you're not satisfied with it, please feel free to contact Useful Tool for Every Family The power meter can monitor which appliances are the killer of the high cost of energy, save energy, save your money. Calculate CO2 emissions quantity. That makes this tool a superb tool both for households and electricians. Full View Angle Redings The new digital large backlit LCD display screen make you easy to read and record cumulative kilowatt-hour, time and electricity expenses from full angles. Solving the problem of unclear screens in many other similar products. User-friendly Function 8 Function Modes Display; 180° Full Wide View Angle Clear Visible Readings; Calculate CO2 Emissions Quantity Display; Relay Overload Protection; Black/Blue LED Backlight Display; Datas Hold Function Dimensions: 6.3" x 2.75'' x1.18'' (16 x 7 x 3cm), Weight: 300g Working current: maximum 13A Time display range: 0secong ---- 9999days Wattage display (watts): 0W----9999WVoltage Display range: 0V- --- 9999V Current display (Ampere): 0.000A ---- 13.000A Frequency display: 0Hz ---- 9999Hz Minimum power display range: 0W ---- 9999W Maximum power display range: 0W ---- 9999W Cost display: 0.00KWH ---- 9999KWH Package Including: 1 X English User Manual