DC-DC Step Down Converter 4.5-40V To 5V/2A USB – With Voltmeter



  • Input voltage: DC 4.5 ~ 40V.
  • Output voltage: 5V (when the input voltage is between 6.5V ~ 40V).
  • Output current: 2A.
  • The voltmeter has automatic calibration function.
  • With reverse connection protection.
  • With overheat protection and short circuit protection.
  • With USB power indicator light.
  • High efficiency and low ripple.
  • Size: 5.7 x 2 x 1cm (L x W x H)


  • Car / motorcycle battery voltage monitoring, or other voltage measurements.
  • USB Charger for Mobile phone, MP3, Tablet PC or other electronic products.
  • The output current capability 5.0V/2A, enough to meet a variety of USB devices, voltage is very stable.

Instructions for use:

Module is connected to power, the voltmeter digital display, if need to charge phone,Tablet PC, MP3 , please press the “Output Enable” button, then the USB power indicator lights, USB output 5.0V; if need to turn off the digital display, please press “low power” button, then enter the low -power standby mode, USB output shutdown.


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