WITRN-U2
USB tester WITRN-U2 (former WEB-U2) is very similar to AVHzY CT-2. Both has same microcontroller.https://mysku.ru/blog/aliexpress/67123.html
https://diykitsblog.com/obzory-i-testy/u2-usb-tester-witrn.html( https://www.youtube.com/watch?v=bwXAR55-P9Q )
http://www.witrn.com
https://ru.aliexpress.com/item/Qc4-pd3-0-usb-er-voltimetro-dc/32938373408.html
At the same time it costs half as much.
Why it is so ?
Besides, AVHzY CT-2 is similar to Kotomi:
https://ru.aliexpress.com/item/The-Kotomi-Premium-USB-Voltage-Meter-USB-Table-QC-PD-Triggers-PD-Testing-Meter/32828429764.html
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