Features: This 12V -style engine Voltages Gauges is a reliable instrument for monitoring electrical levels in your vehicle. Ensure precise Voltages measurements with this 12V -format engine voltmeter, designed for accuracy and durability. Keep track of your engine's electrical performances with this 12V standard Voltages meter. Experience high-quality readings with this -designed 12V engine Voltages indicator, built to specifications. Monitor Voltages levels effectively with this 12V engine Voltages tester, essential tool for maintaining best electrical systems. Specifications: Diameter: about 55mm/2.2inch Measuring range: 8~18V Input Voltages: 8~18V Output Voltages: 12V Ambinents temperature: -30~70℃ Package Includes: 1xAuto Voltmeter note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.