Features 1、This digital meter displays the voltage of the car battery. 2、The LED has high brightness, clear and intuitive. 3、High sensitivity, which has stable and professional performance. 4、Easy to install, no complicated tools required, convenient for using. 5、Built to meet standard specification, strictly follow factory quality control. Specification Condition: 100% Brand New Item Type: Car Voltmeter Material: ABS Color: As picture shown Application: Suitable for DC 12V or 24V Car Measuring Range: DC 8V-30v +/- 1.2% When the engine is running (not driving), LED display: Between 13.5 - 14.5 (12V car) Between 26.0 - 28.0 (24V car) When the engine turned off and nothing turned on, the LED display: Greater than 12.0 (12V CAR) or 24.0 (24V Car) Package List 4 x Car Voltmeter