Transistor Detection: After the power-off state or test is completed, put the test component into the transistor test area of the test socket, the lock handle, the multi-function key, the tester automatically measures, and the measurement result is displayed at of the test. Warning: Always discharge the capacitor before connecting them to the tester! The tester may be before you turn it on! Warning: We do not recommend using a tester to measure the battery! The battery voltage must be less than 4.5V, otherwise the tester may be ! Feature: Self test with automatic calibration Display:TFT Screen, Color Screen Diode Range: less than 4.5V Zener Diode:Transistor Detect Area: 0.01-4.5V Zener Diode Detect Area: 0.01-30V Triac Range: less than 6mA Capacitance: 25pF-100mF Resistor: 0.01-50MΩ Inductance: 0.01mH-20H Power Voltage: 3.7V Power: Built-in Rechargeable Lithium Battery Measurement results using TFT graphic display (160x128) One-button operation Auto power off (timeout setting) Built-in high-capacity rechargeable lithium-ion battery Lithium-ion battery voltage detection Support Chinese and English Warning: Built-in lithium-ion battery, it is strictly forbidden to immerse the tester in water or near heat source! Warning: For your personal safety, please strictly observe the specifications and precautions for using lithium-ion batteries! Material: Plastic colour: As shown Package Contents: 2 x -TC1 Transistor Tester Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.