Description: [Versatile Compatibility]: This Voltage Meter Tester is designed for a wide range of vehicles, including motorcycles, cars, boats, Atv, UTVs, campers, and travel trailers. It operates efficiently within a 12V-24V system [Easy Installation]: The Voltmeter features a twist lock system for secure mounting. It fits into a 1-1/8 inch hole on panels up to 0.25 inches thick and is secured with a nylon retaining nut [Clear LED Display]: Equipped with an easy to read three-digit LED display, this Car Voltage Gauge provides clear visibility of voltage levels at a glance [Reliable Performance]: With reverse connection protection to prevent wire damage, this device ensures safe monitor of battery voltage within the measurement range of 6-30V [Details]: Made from ABS plastic with dimensions of 1.46inchx0.67inch, this voltmeter is both compact and sturdy for long term use in various environments Specification: 3.7cmx1.7cm/1.46inchx0.67inch Size Chart: Working voltage:12-24V Measurement range:6-30V Package Includes: 1 Voltage Meter Tester 2 Insulated Terminals Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.