Fangrui Product Details 1. Two-line Digital Display Dc Voltmeter Lead-acid Lithium Battery Charge Meter, Color: Green 2. Temperature-added Style: You Can Switch The Display Temperature By Pressing The Button. When The Temperature Is Displayed, Only The Power And Temperature Can Be Displayed, But The Voltage Cannot Be Displayed. 3. Color Lcd, Clear Display, Accurate Measurement 4. Customize To Meet The Needs Of Various Battery Parameters 5. The Battery Voltage Can Be Set, And The Battery Voltage Can Be Measured In A Wide Range 6. Independent Wiring, Simple Wiring 7. Power On The Lcd Display To Work, You Can Switch The Parameters Displayed On The Screen You Need 8. Backlight Control, The Backlight Can Be Turned On Or Off By The Switch Key 9. Embedded Installation, Flexible And Not Easy To Break 10. Panel Analysis, Allowing You To Receive Products, Easy To Operate 11. When The Battery Low Voltage Alarm: The Battery Frame Flashes 12. External Precision Adjustable Potentiometer To Calibrate Voltage 13. Battery Type: Lead Acid, Lithium Iron Phosphate, Ternary Lithium Iron 14. Voltage: Dc7-70v 15. Temperature: -20 To 70 Degrees Celsius 16. Application Scenarios: Battery Test System, Inverter Power System, Photovoltaic System, Various Battery Power Monitoring, Assembly Line Test, Automotive Electronics 17. Dimensions: 61.3x33.3x13.5mm 18. Weight: 20g 19. Precautions 20. Please Read The Instructions Carefully Before Using The Product 21. Exceeding The Operating Voltage Range Will Cause Damage To The Product 22. This Product Is For Indoor Use, Please Do Not Use It Outdoors 23. When Users Need To Adjust The Product Voltage, They Can Make Fine Adjustments By Rotating The Potentiometer