Fangrui Product Details 1. Waterproof Lcd Two-wire Lead-acid Lithium Battery Digital Display Voltage Meter 8-100v (blue) 2. Power Off Save, Low Voltage Alarm, Timing Display, Reverse Connection Protection 3. Real-time Monitoring, Smart Chip, Precision Fine-tuning 4. Applicable To Various Instruments, Mobile Convenient Equipment, Medical Equipment, Electric Vehicles, Balance Vehicles, Unicycles, Ternary Lithium Batteries, Lead-acid Batteries, Iron-lithium Battery Packs, Etc. 5. Stable And Reliable, Fast Recognition, Sensitive Response 6. Reverse Connection Does Not Burn, Safe And Reliable 7. The Lcd Display Works, You Can Set The Type Of Battery You Need To Measure 8. Waterproof Grade: Ipx7 9. Working Current: Less Than Or Equal To 15ma 10. Working Air Pressure: 80-106 Kpa 11. Ambient Temperature: -10 To 70 Degrees Celsius 12. Measuring Range: 8-72v 8-100v 13. Measurement Speed: About 2 Secondstime 14. Display Mode: Lcd Screen 15. Installation Size: 58 X 28mm 16. Dimensions: 61.3x33.3x16.2mm 17. Weight: About 27g