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1. Test method: automatic continuous measurement
2. Test range: 0-9999 words
3. Test error: no more than +/-0.5% +/-1 word
4. Sampling speed: 3 times / sec
5. Stability: zero drift Not more than +/-2 words in 4 hours
Sensitivity change is not more than 0.5% within 4 hours
6. Display form: full four-digit decimal large-screen LCD digital display
7. Polarity: Negative polarity shows "-", Positive polarity does not display "+"
8. Power supply mode: 2600mAh 7.4V lithium battery
Repeated charging times up to 2000 times
9. Balance adjustment range: no less than 1500 words
10. Working environment Temperature: -5 to 40 C
Relative humidity: (30~80)%RH
Atmospheric pressure: 86-106KPa
11. Dimensions: 24*19*11 cm
12. Weight: 0.75 Kg
