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5V 2A USB Step-down Voltmeter 
Features:
Voltmeter can be artificially calibrated, will never exist voltmeter inaccurate problem.
Used for monitoring battery voltage, measure the voltage needed for a variety of occasions.
The output is 5.0V/2A, enough to meet a variety of USB devices, output voltage is stable.
With reverse polarity protection, reverse polarity does not matter.
With over-current, over-temperature protection.
With USB power indicator.
Wide input voltage,universally fits for cars, vehicles, SUV, bikes, motorcycles.

Specifications:
Input voltage: DC 4.5 ~ 40V
Output voltage: 5V (when the input voltage is between 6.5V ~ 40V)
Output current: 2A
Dimension: Approx. 58mm x 21mm x 10mm
Weight: 13g

How to use:
1. Connect the module to a power supply, the voltage can be detected in real time.
2. When you need to charge your phone, iPad, MP3 and other digital products, click the "Power Enable" button,then USB power indicator lights, USB output voltage 5.0V.
3. When you need to turn off the voltmeter, click the "Low Power" button, then enter the ultra-low-power standby mode, USB output corresponding shutdown.

Voltmeter calibration method:
1. Press the "Power Enable" button more than 2 seconds, release, voltmeter flashes, means it enters the voltage regulation mode.
2. Press the "Power Enable" button (normal speed), the voltage value will add a unit; Press the "Low Power" button to minus a unit. (A unit is lower than 0.1V, and the minimum voltage display is up to 0.1V, so you need to continuously press 1-5 times to see the voltmeter change, it depends on the current display voltage, the higher the voltage, the fewer the number of press)
3. Press the "Power Enable" button more than 2 seconds, release, to exit the voltage calibration mode. The setting will not lost after power off.

Package Includes:
1 x DC 4.5-40V to 5V 2A USB Charger Step-down Converter Voltmeter
 
5A 3A USB Step-down
Description:
Input voltage:7.5-28V
Output : 5V/3A
Conversion efficiency:96%(Max)
Switching frequency:1.5MHz(Max) Typical 1MHz
Working temperature:-40℃ - +85℃
Load capacity:3A(Max) Typical 2A
Size:42*16*5mm
Package Included:
DC-DC 9V/12V/24V to 5V 3A Buck Step Down Power Module Precise Vehicle Charger
 

 

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2. Orders will be processed instantly and dispatched within 1-3 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3. All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.

  • All package need to wait 30 days(US only need 7-10 days),Please take care it.Less than 30 days,we can't take a refund.
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  • If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.

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