Features:
Universal fits most DC 12V/24V Motorbike Car / Boat / ATV / UTV / Camper / Caravans / Travel Trailer,Bus, RV car, Yacht, SUV and Off-road vehicle. etc.
Twist-and-Lock system. Mini size and easy to install, great for checking Voltage.
3-digits Display, LED digital tube, lamp display is Blue.
Used to monitor the storage-battery voltage, with reverse connection protection.
Timely grasp the state of your battery between full charged and discharged.
Voltage measurement purposes can also be used for other products.

Specifications:
Voltage Measuring range:  5-30V 
Battery Measuring range: LED multi-color, Green---full battery; Orange---half-full battery; Red---low battery.
Outer diameter: 36mm / 1.4"
Thread diameter: 29mm / 1.1"
Length: 41 mm / 1.61"
Interface Type: Anode and cathode
Application: Universal for all Cars, motorcycles and other universal models.

Description:
High Grade Flame Retardant Materials, IP65 Waterproof.
Measurement range:5-15v dc for DC 12V battery.
The indicator in the middle will twinkle to alarm when the voltage is more than 15V for DC 12V battery.
Polarity reverse protection and multiple protection to make it safer to use

Why use voltmeter
This voltmeter help you keep an eye on battery voltage maintenance of the battery,extended battery life to prevent accident caused by battery problems.

Package included:
1 X Waterproof LED DC Digital Display Voltmeter
2 X Insulated Terminals