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DC-DC Step Down Power Module 6V/6V/12V/15V/24V/36V to 5V Converter w/ Vehicle Voltmeter USB Charger

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1. Features and Functions:
1>. Ultra wide voltmeter range: DC4.5~40V.
2>. The capacity of the output current of the 5V/2A (the output voltage of the input voltage at 6.5~40V can be stabilized by the output 5.0V voltage).
3>. One button ("output enable" key) switch USB output, one button("low power" button) into ultra low power consumption.
4>. The vehicle voltmeter can be calibrated by itself.
5>. With reverse protection, the reverse will not burn.
6>. With over current and over temperature protection.
7>. With USB power indicator light.
8>. With connection terminals, it is convenient to access the line.
9>. High efficiency, low ripple.
10>. Module size: 58x21x10mm(LxWxH)
2. Instructions:
The voltage can be detected in real time after the module is on electricity.
When you charge the mobile phone, pad, MP3 and other digital products, touch the "output enable" button, at this time the USB power indicator lights up and the USB outputs 5.0V voltage.
When you turn off the digital tube, touch the "low power" button, when the module enters the ultra low power standby mode, and the USB output is turned off accordingly.
3. Application:
1>. The ultra wide input voltage can be used for vehicle, battery car and motorcycle.
2>. It is used to monitor battery voltage and grasp battery state in time.
3>. It can be used for various voltage measurement purposes.
4>. The output current of 5.0V, 2A meets all kinds of USB devices, and the voltage is very stable.
Note: This module default D+ D- short connection. It is compatible with most of the mobile phones, and a variety of mobile phone recognition resistance installation location is reserved. If you need to join the identification resistance, please cut off the wire connecting D+ D- and add it on your own.
4. Two line self calibration method for vehicle voltmeter:
1>. Under the normal working state of the vehicle voltmeter, the "output enable" button is loosened after 2 seconds, and the voltmeter is flickering, and then the voltage adjustment mode is entered.
2>. Touch the "output enable" button, and the voltage is raised by a unit. Touch the "low power" button, and the voltage is reduced by one unit. Because the voltage value of a unit is less than 0.1V, you need to press 1-5 times continuously to see the voltmeter changing 0.1V. A number of specific continuous touch buttons depend on the current voltage value. The higher the current voltage is, the less the press is.
3>. After the voltage adjustment is completed, the "output enable" button is loosened after 2 seconds, then the voltage calibration mode can be quit, and all the parameters are automatically saved.
Note: in this way, you can get a precise voltage value in the whole voltage range by only once calibrated.
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DC-DC Step Down Power Module 6V/6V/12V/15V/24V/36V to 5V Converter w/ Vehicle Voltmeter USB Charger