Round LED voltmeter for motorcycle waterproof DC 5V-25V panel mounted display Universal for: Motorbike Car / Boat / ATV / UTV / / Caravans / Travel Trailer etc.Twist-and-Lock system.<br> It works for 6-30V. Mini size and easy to install, work great for checking Voltage. The state of your battery between full and discharged.<br> The meter has easy to read LED segments and connect to your 5-25 volt system.<br> Used to monitor the storage-battery voltage, with reverse connection protection function, line will not be burnt.<br> Timely grasp the state of battery voltage, voltage measurement purposes can also be used for other products.<br> :<br> Waterproof<br> Measure voltage: 6-30V DC<br> Display: 3-digits 36inch<br> Size: 37 x 29mm<br> Mounting hole: 29mm<br> Interface Type: Anode and cathode<br> Eco-friendly Meterial: Acrylic<br> Application: Universal for all cars, motorcycles and other universal models.<br> Package includes:<br> 1x LED DC Voltmeter<br> Note: Light 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.