● Determine the running cost of your appliances.
● Measure voltage, current, frequency, watt, power factor, and greenhouse
   gas emissions.
● Optical USB to RS-232 data transmission.
● 2 Optical LEDs are built-in for data transfer.
● Transferring and showing real-time data to a PC.
● Make informed decisions when purchasing appliances and equipment.
● Reduce your electricity bill.
● Calculate electrical expenses by real, hour, month.  
● Can make different kinds of plugs for different countries / areas,

    such as Type B, E, G, I plugs.....etc.
● Data communication function.
● Freely set upper and lower limit for V,A,W and

   alarm when measured value is out of limit.
● Backlight function.