Features 1、Automatic detection of zener diode 0.01‑20V. 2、Self‑test with automatic calibration. 3、Support infrared coding. 4、Infrared waveform display. 5、The measurement results are displayed by TFT graphic. Specification Features: 1. Automatic detection of zener diode 0.01-20V. 2. Self-test with automatic calibration. 3. Support infrared coding. 4. Infrared waveform display. 5. Infrared receiving instructions. 6. The measurement results are displayed by TFT graphic. 7. A key operation. 8. Automatic shutdown (timeout setting). 9. Built-in high capacity rechargeable lithium ion battery. Specification: Condition:100% Brand New Color: As Pictures Shown Capacitor: 25pF-100mF Resistor: 0.01-50MΩ Inductor: 0.01mH-20H Battery: 0.1-4.5V Weight: Approx.121g/4.3oz Package list: 1 x Transistor tester 1 x USB cable. 1 x Red and yellow green contact wires 2 x capacitance Package List