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https://pcbway.com/g/88Ohpl - High quality PCB manufacturer (by registering via the link above, you support the development of the channel and receive a coupon for $5). ZOYI ZT702S: https://bit.ly/3Qh17eE 0:00 Intro 0:10 What's inside 0:55 Test cables 1:59 Parameters 4:08 External structure 5:56 Oscilloscope 16:30 230V measurement 17:33 Multimeter 30:52 USB and firmware update 32:10 Disassembly and construction analysis 37:32 Current consumption and charging 38:28 Summary