Automatic detection with simple controls - One-button automatic detection with automatic shutdown. You can also press the multi-function button to turn off the detector, making operation straightforward and efficient. Clear results on a TFT color screen - Insert the component pins into the designated area and select the appropriate test mode. The tester runs automatically and displays results on a backlit TFT color screen for easy reading. Self-calibration and versatile testing - High-speed testing capability supports detecting infrared waveforms and testing zener diodes. It also includes a self-calibration function to ensure consistent results over time. Durable construction - Built from high-quality ABS material for long-lasting use in professional or hobby work. Key benefits and practical use - Fast, reliable identification of transistor types and related components with minimal setup. - Clear, readable test results suitable for technicians and students alike. - Self-calibration helps maintain accuracy without frequent external adjustments. Use scenarios - Electronics repair and component identification: Quickly identify unknown transistors and related components in radios, amplifiers, and other gear. - Circuit troubleshooting and design verification: Verify zener diode presence and behavior in voltage regulation and protection circuits. - Education and hobby projects: Learn component testing basics with a simple, reliable tester that shows clear results on a color screen.