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4 Bit LED USB Voltmeter Ammeter current Power Capacity Tester White colour new

Product Description

Note: Color : white.
It forbid for being used for inductive load, eg: the load with motor and fan. it can be used digital products, eg: mobile phone,power bank,USB flash drive and etc..
Technical Parameter:
Product model: USB meter (H)
Voltage range: DC3.500-7.000V
Voltage accuracy:(0.3% + 2words)
Current range: DC0.000-3.000A
Current accuracy:(0.8% + 3words)
Capacity accumulation: 0-99999mAh; 0-700Wh
Capacity resolution: 1mWh; 1mAh
Product weight: 10g (package 30g)
Idle discharge: about 10mA
Display screen: 0.91'' OLED screen
Update rate: 2 times/s
Product size: 57mm*20mm*10mm (L*W*H)
When contact the power supply, the screen shows welcome window firstly and then comes into main interface. The first line displays voltage, power and data set. The second line displays current and accumulated capacity.
Current zero calibration function:
Because of the influence of component aging and temperature variation after long-term use, the error may become bigger when it measures small current. So you can keep pressing the button on the back to connect power supply in the no-load terms, until the BLN lights. The calibration is accomplished.
Over-voltage and Under-voltage reminding function:
When the voltage is over 5.3V (less than 4.7V), the ˆ ('') will be flashing to remind the voltage is too high (low). When the voltage becomes to 4.7V-5.3V, the will be disappeared.
In the main interface, you can click the button to switch data set one by one. And it provides for storing and checking 0 to 9 totally ten group data set.
Capacity stored function:
When data set is between the 1 to 9 group, the current capacity will be stored after power off. And the stored capacity will be accumulated after power on. When the data set is 0 group, the current capacity will be stored after power off. When power on next time, the stored MAH is blinking displayed .When the new MAH is up to 1 MAH, the stored MAH will be covered, and the values will start over.
In the main interface, click 2 times the button on the back (the time interval of the two times is within 0.5s), then you can get into data check window and see the capacity of the current data set. In this window, you can click the button to check the next data set, and when you keep pressing the button more than 2s, the current data set will be cleared. And if you click the button two times, it will come back to the main interface.
Counting the capacity and efficiency of the mobile power bank battery:
Ah data * output voltage /battery voltage /efficiency = mobile power bank battery Ah (output voltage is typically 5V, the battery voltage is generally based on 3.7V, typically by 85-90% efficiency)
Capacity unit switch function:
In the main interface, keep pressing the button, until the BLN lights (time about 2s), loose the button, the capacity between mAh and mWh is switched.
Screen rotation function:
In the main interface, keep pressing the button, until the BLN lights and then goes out (time about 4s), loose the button, the screen is rotated and automatically stored for being used next time conveniently.
Shut-down screen function:
In the main interface, keep pressing the button more than 6s, then loose the button, the screen display can be shut-down and come into power saving mode. In the meaning time, the BLN is flashing. You can click the button to come back to the main interface.

 

We accept Paypal .
If you can't receive the product within 2 months (60 days), please contact with us,we promise to payback 100% of your money.

We ensure our products work normally before post.If the products is broken before arrival to you,all you should do is taking a photo to show us our broken product.We promise to payback 100% of your money.

 

We appreciate positive feedback . we always try our best to service every customer . If you have any question,feel freely to contact us,we are always here to offer help .
 
 
All items will be shipped within 1~2 business day after payment. by China post or Singapore post or HK post,
   
Order valus more than $25, we provide free tracking number, order value less than $25, customer need to pay $2 if need tracking number
 
Ship to address provided by ebay if no special notes from buyer .
Delivery Time: Normally, It Takes About 10-30 Business Days to Arrival for most countries.
5-14 days to USA.
10-25 days to Australia / Canada.
14-30 days to major cities in Europe .
4 - 8 weeks to Italy , Brazil ,Russia.
 
However, it may delay due to industrial strike action, severe weather, custom reasons or peak seasons
 
we specialized in international business for more than 8 years We are professional in international business.
 
We work with Reliable international post service company.we can make sure you can get your items in time
 
We package every parcel very carefully. All items will be tested before shipped.We promise you will get your items in good situation.We seek for long term .
 
Mian business
We selling items with high quality and best price .We mainly selling ICs, electronic component ,electronic modules. PCB board etc
 
We also have customer to find other items that do not selling in our store .pls contact us if you need ,we can always provide the best price.
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