The meter has easy to read LED segments and connect to your 12 volt system.Used to monitor the storage-battery voltage, with reverse connection protection function, line will not be burnt.Timely grasp the state of battery voltage, voltage measurement purposes can also be used for other products.It works for 3V-35V. Mini size and easy to install,work great for checking Voltage.Universal for: Motorbike Car / Boat / ATV / UTV / Camper / Caravans / Travel Trailer etc.Twist-and-Lock system.Display: 3-bits, LED digital tubeWith Touch-ON OFF Switch,easy to use and save energy.Support battery voltage value and capacity percentage of battery displayTouch-about 5s to turn on or turn off the power.The state of your battery between full charged and dischargedWaterproof; Flame retardant materialMeasure voltage: DC 3V - 35VSize: 36 * 22mmInterface Type: Anode and cathodeColor: BlackMaterial: ABSLED display color: GreenApplication: Universal for all Cars, motorcycles and other universal models.Package Contents:1 * Voltmeter with Touch-ON OFF Switch2 * Wiring plugOnly the above package content, other products are not included.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.