Sunfounder YS-04 DC-DC Buck 5V USB Charging Module

• Sunfounder YS-04 DC-DC Buck 5V USB Charging Module
• Offers high efficiency, and low ripple
• Comes with reverse polarity protection
• Detects voltage in real-time
• Set connecting terminal for wiring
• Onboard voltmeter has self-calibration with high accuracy

The Sunfounder YS-04 DC-DC Buck 5V USB Charging Module detects the voltage in real-time. When you need to charge your digital products, like mobile phones, Ipad, MP3, and so on, you can touch the sw2 button slightly.

Meanwhile, the USB power LED lights up and the USB voltage output is 5.0 V. Once you need to turn off the 7-segment display, press the sw1 button softly and the module will be in standby mode with ultra-low power consumption. And the USB output stops.