Description:
Model: KWS-10VA USB
Input voltage display window (3-9V) Accuracy ±1%
Charging current display window (O-3A) accuracy ±1%
Product size: length 60mm (with USB74mm)*width 28mm*height 15mm
Features:
1. Simultaneous display of voltage and current data for easy viewing
2. Can detect a variety of power supply output voltage and current
3. Can detect the quality of the USB cable
4. With precision current calibration function, the current accuracy is higher
Instructions for use: Measuring voltage and current: Plug the USB male plug into a 5V charger, and plug the female socket into a mobile phone and other equipment, and directly read the voltage and current parameters.
Model: Blue USB
Input voltage display window (3-7.5V) accuracy ±1%
Charging current display window (0-2.5A) accuracy ±1%
Size: 52mm*21mm*15mm
Working range: current (O-2.5A) to detect whether the voltage of the mobile phone charger can reach the standard DC5V
Resolution: Voltage 10mV Current 10mA
Error: Voltage <±1% Current <±2%
Full-scale voltage drop: 200mV (when measuring current)
Working temperature: 0-60℃ 
Model: KWS-V20 USB
Input voltage display window (4-20V) accuracy ± 1%
Charging current display window (0-3A) accuracy ±1%
Working time display window (0-99H)/min
Battery capacity display window (0-99999mAh)
Size: length 59mm*width 23mm*13.5mm
Model: KWS-USB Black/White
illustrate:
1: Click the button to view the charging data saved in groups 1-9.
2: Press and hold the button for 3 seconds to clear the charging data stored in a single group.
3: Quickly double-click the button to change the display page.
4: Press and hold the button for a long time and then plug it in, enter the voltage calibration as shown: (5.526V→), double-click the button again quickly as shown (5.528v*), click the button to increase the displayed voltage. Quickly double-click the button again to display (5.528V+) and click the button to decrease the display voltage. Quickly double-click the button again to display (.526V→), and then click the button to display the Current Calibration system automatically performs current calibration. After the calibration is completed, it will automatically return to the main function page and can be used normally.
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.
All dimensions are measured by hand, there may be small deviations. Thanks! 
 

Package Including:

 

According to your choice.

 
Payment:
We accept Paypal only, It is fast, Easy and Safe.
Payment must be completed within 7 days.
PLEASE NOTE: S&H DOES NOT INCLUDE DUTIES, LOCATL TAXES OR ANY OTHER IMPORTATION FEES.
Please list your special requests (color, packages, etc.) in the PAYPAL NOTES SECTION when you make payment.
Shipping:
We Ship to Worldwide.
Orders processed within 24-48 hours of payment verification. it will take 15-25 days for delivery. but Customs will random inspection some parcel, so that's why some parcel need more than four weeks to arrive. Shipping time is only estimated and not guaranteed.
We only ship to confirmed PAYPAL addresses. Your PAYPAL address MUST MATCH your Shipping address.
Package to USA will Shipping by E-Package with Tracking Number(7-15 Days to Delived). To other Countries will shipping by Post Air Mail without tracking number(ONLY when the order is over 20USD will supply Tracking Number Shipping Way!)(15-35 Days to Delived)
Items are shipped via China Post Air Mail.
Guarantee:
Good Good quality. Buy with confidence!
If you are not satisfied when you receive your item, please return it within 7 days for a replacement or money back. Please contact me before you return it.
Not accept returning of electronic components.
Full refund after we receive our original item, Note: Return shipping is to be paid by the Buyer.
We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important to us. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.
 
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