The Buck Regulator module converts an input of 4.5-40V into a very stable 5V 2A output. The Step-Down Voltmeter device features a USB port through which you can charge your phone. While charging your device please consider that the output of this device is regulated at 5V 2A. Simply connect this device to the power supply, the voltage can be detected in real-time. When you need the phone, IPAD, MP3, and other digital products to charge, click the “Output Enable” button, then the USB power indicator lights up and Variable Power Supply will start supplying 5V 2A at its output. Specification of DC To DC 2A USB Charger 4.5-40V To 5V Step-down Buck Converter Voltmeter Module: Model: YS-04 Input voltage: DC 4.5 ~ 40V. Output voltage: 5V (when the input voltage is between 6.5V ~ 40V). Output current: 2A. Size:58*21*10mm(approx) (L*W*H) The voltmeter has an automatic calibration function. With reverse connection protection. With overheat protection and short circuit protection. High efficiency and low ripple. With USB power indicator light. Package Include: 1 x DC To DC 2A USB Charger 4.5-40V To 5V Step-down Buck Converter Voltmeter Module
