HOTSYSTEM New 12-24V Waterproof LED DC Digital Display Voltmeter For Car Motorcycle Truck Boat Marine Range of application: Cars, motorcycles and other universal models High quality voltmeter for checking the state of your battery and battery charger Used to monitor the storage-battery voltage, with reverse connection protection function, line will not burn Timely grasp the state of battery voltage, voltage measurement purposes can also be used for other products Shipping From US