Function: 1. High-precision 3-digit LED display, which makes it clearer and more accurate. 2. With color LED graphic indicator, when there is low voltage, medium voltage, full voltage or overvoltage, it can be displayed 3. Waterproof design, no longer worry about the damage bad weather may bring to the voltmeter. 4. Mount in a 1-1/8" hole, 0.25" thick panel, nylon retaining nut holds meter in place. 5. Easy-to-read real-time battery voltage monitoring, help you know the volt situation quickly. 6. Universally fits most DC 12V motorcycles, boats, ATVs, UTVs, campers, caravans, caravans, etc. Specification: Item Type: Tension Meter Black colour Material: fireproof PC Size: approx. 61x35x43mm/2.4x1.4x1.7in Working voltage measurement range: 5-24V The digital display shows the values: 6-24 V The meter will flash when the voltage drops below 5.1V The bar graph starts at 11.3V and peaks at 13.2V The display flashes when the voltage is 15V or greater Package List: 1 x voltage meter 2 x blue terminal connection