Our voltmeter help you keep an eye on battery voltage, maintenance of the battery, extended battery life to prevent accident caused by battery problems. Adoption of material, the voltage is durable and use. It works for 12V-24V equipment. With mini size, it is easy to install, great for checking voltage. It is suitable for motorbike, Car, Boat, UTV, Caravans, Travel Trailer, etc. Features - Brand: WINOMO. - Color: As shown. - Material: Plastic. - Size: About 3.5x3.5x3.5cm / 1.4x1.4x1.4inch. - Input Voltage: DC12V - 24V. - Voltage measuring Range: 6-30V. - Used to monitor the storage-battery voltage, with reverse connection protection function, line will not be - It real time shows you the accurate voltage status of car or motorcycle, more secure for driving. - A nylon retaining nut holds the meter in place. - It works for 12V-24V. Mini size and easy to install, work great for checking Voltage. - Suitable for motorbike, Car, Boat, UTV, Caravans, Travel Trailer, etc. Package list: 2 x WINOMO Digital Display Voltmeter Waterproof Voltage Meter Red with a Adapter Nut for DC 12V-24V Car Motorcycle Auto Truck