1. Voltage measurement range: YM-202D 0～150V； YM-202E 0～5V；

accuracy: 1V～150V±0.5％；0～0.1V±1.0％

2. Current measurement range: YM-202D 0～20A； YM-202E 0～5A；

accuracy: 1A～20 ±0.5％；0～0.5A±1.0％

3. Phase measurement range:±180⁰ error±1⁰

4. Measurement frequency range: 40Hz～60Hz

5. Work environment:temperature-10℃～+50℃ humidity≤90%；

6Working power supply:DC12V dedicated lithium iron phosphate battery power supply;

7External dimensions:330mm×280mm×140mmHost weight:3.4kg.