GERI DC DC Converter Buck Step Down Module 8-50V 48v 36v 24v 12v to 5V 3A Dual USB Output GERI&reg; Notice: it can't work for iphone ipad Input voltage: DC 8-50V, (12V 24V 36v changes to 5V),Output parameter: DC 5V 3A MAX Double usb output Super-thin, small size, high efficiency, easy installation and use Epoxy potting, seismic, water, moisture, dust, long term stable and reliable quality Use imported and integrated switching regulator modules manufacturing, quality is stable and reliable