SMAKN 2 Wire Red Dc 4.0-30v LED Panel Digital Display Voltage Meter Voltmeter Automatically Adjust the Precision<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Connection is simple， just need to pick up two lines， a joint reverse protection， then do not burn</li><li>Starting voltage is low， only 3.50 V， can correct measurement</li><li>Variable precision: Precision automatic change below 10.0 V， the highest resolution of 0.01 V， Prec</li><li>Can be used for measuring the car / battery car / motorcycle battery voltage， and other forms of vol</li><li>Can be used in all kinds of voltage measurement purposes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41DH0WWpuIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41FIYAeGfPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41N0foG4ItL.jpg" noproxy>