WATERWICH Waterproof 12V DC Voltmeter Color LED Digital Display Volt Meter Voltage Meter Scale Gauge Battery Tester for Marine Car Motorcycle Truck Boat RV;

Features:
Universal fits most DC 12V 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 (Blue digital display)
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, CE and Rohs Certify, Totally Environment Friendly
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 ,it will twinkle to alarm when the voltage is more than 30V for DC 24V 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