Quite possibly the easiest way to monitor your battery voltage, or the voltage in any DC powered system. Simply wire up to a positive and negative DC power source of 5-30VDC, and the voltmeter tells you the voltage (taking power from the DC source to operate). • Supplied with brackets for panel or surface mounting • Connection is via 6.3mm spade terminals • Also available with additional modules Specifications DC Volts Measurement Range : 5.00000000V, 30.00000000V Display Type : LED Display Height : 36.00000000mm Display Width : 26.00000000mm Display Backlight : Red LED Backlit Bargraph : false Dimensions for : Including Bracket Dimension details : Panel Mounting Width : 60.00000000mm Height : 42.00000000mm Mounting Method : Panel Attachment / Securing Method : Collar / Nut Square Mount Hole Width : 60.00000000mm Square Mount Hole Height : 42.00000000mm Dimension for : Including Bracket Dimensions details : Under Dash / Surface Mounting Hood Width : 55.00000000mm Height : 50.00000000mm Depth : 80.00000000mm Dimensions for : Without Bracket Dimension details : Voltmeter module Depth : 40.00000000mm Diameter : 36.00000000mm