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This portable transistor tester delivers fast, accurate component detection for hobbyists and electronic repair technicians alike, standing apart from basic multimeters with its automatic pin identification and built-in color screen display. As part of our MT measurement tool lineup, this model upgrades the original entry-level tester with expanded component compatibility and a lightweight, pocket-friendly housing that fits easily into tool bags for on-site use. The device supports testing resistors, capacitors, diodes, triodes and MOSFETs, with a working voltage range of 3.7V to 5V and a dimension size of 68mm × 42mm × 15mm, powered by a rechargeable lithium battery with 8-hour continuous working life.