With the help of this Power Meter Monitor, You can make certain how much your standby appliances cost, what the power factor is, whether the appliances are really charged, and how long have your appliances been charged. It enjoys 8 display modes as below: Mode 1: Time/ Watt/ Cost Display Mode 2: Time/ Cumulative Electrical Usage Display Mode 3: Time/ Voltage/ Frequency Display Mode 4: Time/ Current/ Power Factor Display Mode 5: Time/ Minimum Power Display Mode 6: Time/ Maximal Power Display Mode 7: Time/ Display Specifications: Product Name: Energy/ Power Meter Measure Volt, Amp, Hz, W Record Time, Cost, KWh Large LCD display, easy to read and setup Low power consumption CE, SAA, BS, RoHS Approved Technical Datai1/4? br> - Operating voltage: 240V,50HZ Operating current: max 10A Wide voltage range: 230V - 250V Display Range: Time: 0 second - 9999 days. Power: 0W - 9999W Voltage: 0V - 9999V Current: 0.000A - 9999A Frequency: 0Hz - 9999Hz 0.00cost/KWh - 99.99cost/KWh Energy: 0.000KWh - 9999KWh Cost: 0.00cost - 9999cost Accuracy +/-2% Package Included: 1 x AU Plug Power Meter (As you choose) Notes: The colors may be a little different for the different monitor display. Please allow minor deviation due to manual measurement