Wide measuring range of DC 6-36V with 0.1V accuracy for real-time monitoring of vehicle power status. Practical voltage judgment guide to assess battery status before and after starting the vehicle. Clear 3-digit LED digital display for highly visible readings during day or night. Ideal for various vehicles including cars, trucks, motorcycles, boats, yachts, and trailers. Package includes 1 car voltmeter and 2 nylon nuts for quick, hassle-free installation. This DC 6-36V battery voltage meter delivers 0.1V accuracy, helping you monitor vehicle power status in real time. Practical voltage judgment guide: Before starting the vehicle: below 10.8V, battery is too low and may not start; 10.8V-11.8V, starting will be difficult, turn off other loads; 11.8V-12.8V, normal. After starting: 12.8V-13.2V, charging may be insufficient; 13.2V-14.8V, normal; above 14.8V, overvoltage risk, check stabilizer. Equipped with a bright, precise 3-digit LED screen, this 12V waterproof voltage tester offers highly visible readings at a glance. Easily observe battery status during day or night, ensuring safer driving and effective monitoring of your electrical system during every trip. Color: Black Material: plastic Package Contents: 1*Battery Monitor Indicator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.