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It features a + and – screw terminal for easy wiring and 2 buttons to control the operation of the unit. The top button turns the display on and off. The button button enables and disables power output. The LED display shows the input voltage. It has a nice 47µF cap on the output rail and separate solder points if the user desires to connect a wire directly to the outputs instead of thru the USB port.
Name: Step down voltmeter module
Input voltage: DC 4.5 ~ 40V
Output voltage: 5V (when the input voltage is between 6.5V ~ 40V)
Output current: 2A
Size: approx 5.7 x 2 x 1cm(L x W x H)
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.
When you need to charge the mobile phone, Ipad, MP3 and other digital products, touch the "output enable" button, then the USB power indicator light on, the USB output voltage 5V ; When you need to turn off the digital tube, touch the "low power" button, then the module into the ultra-low power standby mode, USB output is also turned off accordingly.
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