Features: 1.Universal: With 52MM / 2in mounting size, voltmeter gauge is universal fit for RV, yacht, fishing boat, ship, and has a display range is 18V to 32V. 2.High Precision: Built in precision sensor, volt gauge can accurately measure the voltage value, and timely update the display value, provide accurate information. 3.Fast Response: Voltmeter gauge can quickly respond to voltage changes, and immediately display the new voltage value, so that you can quickly obtain voltage information. 4.Strong Durability: Made of strong abs and stainless steel materials, our volt gauge is not easy to rust, can run stably in different environments for a long time. 5.Easy Installation: The voltmeter comes with a simple installation and wiring operation, allowing you to install quickly, without the need for professional skills. Specification: Item Type: Voltmeter Gauge Material: ABS+ stainless steel Working Voltage: DC9-32V Parameter: DC18V-32V Installation Size: Approx. 52MM / 2in Display Function: Voltage Fitment: Fit for RV, yacht, fishing boat, ship