Fangrui Product Details 1. Tasi Ta800a Universal Meter Digital High Precision Full-automatic Meter 2. Voltage: Dc: 0.1mv-600v; Ac: 0.01v-600v 3. Dc Current: 0.01ma-10a 4. Resistance: 0.1 Ohm-20 Megohm 5. Sampling Frequency: About 3 Timessecond 6. Automatic Shutdown: 15 Minutes (can Be Manually Shut Down) 7. Operating Environment: 0-40 Degrees Celsius, Relative Humidity Within The Industry 8. Storage Environment: -10-60 Degrees Celsius, Relative Humidity Within The Industry (remove The Battery) 9. Power Supply: 2 X 1.5v Aaa Batteries (not Included) 10. Functions: Diode Measurement, Backlight Display, On And Off Beeping, Automatic Shutdown, Value Hold 11. Packing List: Host X 1, Meter Pen X 2, Manual X 1 12. Overall Size: About 12.5 X 6.5 X 3.5cm 13. Weight: About 107g 14. Features: 15. Ac Voltage Measurement: Gear Dial To Ac600v, Redblack Pen Contact Zerofire Respectively, The Screen Displays The Ac Voltage Value 16. Dc Voltage Measurement: Gear Dial To Dc20v, Redblack Pen Contact Battery Positive And Negative Respectively, The Screen Displays The Dc Voltage Value. 17. Resistance Measurement: Gear Dial To 200kω, Red And Black Pens Were Contact Resistor Ends, The Screen Displays The Resistance Values 18. Pass Beeping: The Meter Pen Probe Contact To Be Measured At Both Ends Of The Route, The Path Will Be Issued By The Alarm Tone, The Circuit Is No Response 19. High Definition Large Screen Display With White Background Lighting