<h3>About this item</h3><ul> <li>High Quality Material: This product is crafted from high-quality PC material. This material offers impact resistance and wear resistance, effectively withstanding bumps, vibrations during vehicle operation, and scratches or collisions during daily use, thereby protecting the internal precision electronic components from damage. Additionally, PC material possesses stability, ensuring reliable performance under even the most complex conditions.</li> <li>Universal Size: This product features a display diameter of 1.42 inch, a total height of 1.22 inch, and a base diameter of 1.02 inch. It is compatible with most mainstream vehicle models, supporting 12V/24V voltages, and suitable for automobiles, motorcycles, buses, trailers, and various other vehicles. Its mounting hole size is 26 millimetres, matching the installation dimensions of most devices.</li> <li>Installation Convenience: Featuring a plug-and-play design, installation is remarkably straightforward. Simply drill a hole of appropriate dimensions at the desired location, insert the voltmeter faceplate into the hole, and secure it using the fixing nut. No additional tools are required throughout the process, ensuring a stable installation with small effort.</li> <li>Monitoring Function: When the vehicle is not running, a voltage reading between 12.2V and 12.8V indicates a healthy battery. After starting, a voltage maintained between 13.4V and 14.8V signifies normal operation. Should the voltage drop below 12.2V, it alerts the user to a low battery charge requiring prompt recharging. These clear voltage ranges enable users to swiftly assess battery condition.</li> <li>LED Digital Display: This product features a clear LED digital display with prominent voltage readings, easily readable even in bright light conditions. This effectively prevents misjudgements of battery status due to blurred readings. It also supports 24-hour real-time monitoring of battery voltage dynamics, providing precise feedback on battery performance to help users promptly understand its health.</li> </ul>