Voltmeter Measure Range--This voltmeter measures DC Voltage precisely from 8V to 16.0V
Digital Voltmeter Size—2.2" x 1.1" x 0.4", Mini size with 3-digit LED Digital Display.
Multiple Purposes-- the LED display voltage meter is applicable for most vehicles, like cars, ships, RV, substation automation, distribution automation, test equipment
Wiring--With reverse connection protection, red is for positive of the power supply while the black is for the negative side, easy and effortless.
Characteristic-- Displays "LLL" when the voltage is lower than measuring range; displays "HHH" when the voltage is higher than the measuring range.