5X Calculator DIY Kit 51 Microcontroller Homemade Digital Tube Calculator Circuit Board Welding Training Electronic Kit
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Power supply mode:USB powered by 5V or 3V button battery,(note that USB and button batteries cannot be powered at the same , otherwise the button...
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221 items, bits, keys: combined, hexagonal, heads: 6-points heads, heads E-profile, candlestick, ratchet: 2