Dual USB Rocker Switch Style Voltmeter with Hidden Display This Dual USB Rocker Switch Style Voltmeter fits into any standard 13/16” X 1-7/16” hole. Allows two devices to be charged simultaneously while also displaying the batteries output. The total output 4.8A load is split 2.4A per side. Enough power to charge phones, pads, and tablets quickly and efficiently. Input 12-24VDC. Output DC 5V/4.8A. Red LED display. IP65 rating.WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.