You can get this Ethernet tester from ebay.com as well as numerous Chinese sites for something like ₤ 3, that makes it fantastic worth as it does function well.
Right here I reveal the functions and afterwards take it apart to check out the layout, and also reveal a reverse-engineered circuit representation.
I believe my own was from Aliexpress, however you can obtain extremely comparable points in a range of colours from various suppliers for the exact same rate.
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