- Multifunction testing: The T7 Transistor Tester is a full-color display multi-function test instrument capable of measuring a wide range of components including transistors/triodes, diodes, resistors, capacitors, and more. - Advanced features: Supports infrared coding, automatic calibration, and self-test functions. It also provides automatic detection of zener diodes at 0.0130 V. - Graphic display and simplicity: Features a graphic display for clear measurement results, one-key operation for simplicity, and automatic shutdown to conserve battery life. - Compact design and power: Compact design with a built-in high-capacity rechargeable lithium-ion battery, ensuring long battery life and portability. - Practical applications: Use on the electronics repair bench to identify and verify components quickly; field service where power is limited and fast results matter; and DIY projects that require reliable component testing before assembly.