Mini DC Power Supply USB Step Down Converter Module with LCD Display Screen Voltmeter Ammeter DC To DC 24V To 1-20V Adjustable 5V 2A With Case for Arduino<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> This product uses new low voltage and high currency efficient DC-DC power technologies with a microcomputer control system to monitor voltage and current in real time </span></li><li><span class="a-list-item"> LCD screen with white characters and a blue background displays two groups of voltage and current simultaneously </span></li><li><span class="a-list-item"> Adjustable voltage available on DuPont connectors and terminal blocks which can be tightened with screws </span></li><li><span class="a-list-item"> Input voltage 9-24V (max. 30V)， reverse polarity protection，Output voltage adjustable from 0.8V to 20V， max. 2A load with short circuit protection </span></li><li><span class="a-list-item"> Size: 80mm*80mm*25mm </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51VE85e4kAL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41BW4WalNoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/516LgMO-k1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41DoHokXedL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51%2BYn11g8TL.jpg" noproxy>