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12V 24V Mini Red LED Digital Display Voltmeter Vehicle Voltage Meter Tester With Cable Features: Displays the voltage of the car battery. Help you check the storage battery as the voltage is excessive or too low. You can maintain your automobile by the real time data of voltage. With LED back light, you can easily check the voltage at night. Powered by cigarette lighter socket, suitable for both 12V 24V cars. Specification: Power Supply: DC 12V or DC 24V Test Range: DC 9V - 30V Accuracy: %1.2 LED Display Color: Red Digit: 3 Digit Normal Values: 12.2V-12.8V( Engine not start) Normal Values: 13.4 V - 14.8 V (Engine start) Cable Length: 70 cm Size: 7 cm x 3.5 cm x 2 cm Net weight: 54g Package included: 1 x 12V 24V Mini Red LED Digital Display Voltmeter Vehicle Voltage Meter