This Dual USB Rocker Switch Style Voltmeter charges two devices simultaneously while also displaying the batteries output. Fits into any 13/16 x 1-7/16 rocker switch hole. The total output 4.8A load is split 2.4A per side as needed. Enough power to charge phones, pads, and tablets quickly and efficiently. Protective dust cap extends the life of the charger. Constructed of injection molded nylon. Output DC 5V/4.8A. Input 12-24VDC. Red LED display. IP65 rating.