Fangrui Product Details 1. Duoyi Dy2201c Car High-precision Digital Multi-function Maintenance Automatic Universal Meter 2. Features 3. Multi-functional Meter, The Sophisticated Design, Convenient Operation, Accurate Readings, Complete Functions, The Use Of New Protective Sleeve And Large Screen Liquid Crystal Display, Jack In The Input End Is Connected With The Ptc Thermistor Element To The Instrument Core Components. 4. Acdc Voltage Current Resistance Test; Diode Pn Junction Voltage Measurement;circuit Switching,transistor Test 5. Large Lcd Display, Size In 70x48mm,high Contrast, 28mm Character Height,clear And Pleasing. Lcd With White Back Light, Convenient In Dark Environment Operation. 6. Maximum Display 1999 For 312 Digit,ac And Dc Voltage, Current, Resistance, 19999 For Speed, Frequency, Pulse Duration, Dwell 7. The Product Is Suitable For Professional Auto Detection And Repair, Engineering Design, Testing, Production Test. 8. Specification 9. Dc Voltage 20-1000v Accuracy: +-0. 10. Dc Current 20ma-20a Accuracy: +-1. 11. Ac Voltage 20-700v Accuracy: +-1. 12. Ac Current 20ma-20a Accuracy: +-2. 13. Measuring Of Motor Dwell Angle: 0.1-360 Degree Celsius (1234568 Cylinder) 14. Measuring Of Motor Speed: 300rpm-19999rpm (2 Stroke), 600rpm-19999rpm (4 Stroke) 15. Impulse Time Measurement: 0.1ms - 1000 Ms 16. Measuring Temperature: -40-1000 Degree Celsius 17. Frequency Measurement: 2-20khz 18. Maximum Display: 1999 (312 Digit,ac And Dc Voltage, Current, Resistance) 19. 19999 (speed, Frequency, Pulse Duration, Dwell) 20. Lcd Display Size: 70x48mm, 28mm Character Height 21. Power Supply: A 9v Battery (neda1604, 6f22 Or Equivalent), Battery Not Include 22. Working Temperature: 0-40 Degree Celsius Relative Humidity Less Than 23. Storage Temperature: -10-50 Degree Celsius Relative Humidity Less Than