1. Automatically detects NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, transistors, resistors, capacitors, and other components. 2. Automatically tests a component's pins and displays them on the LCD screen. 3. Can detect the transistor's, MOSFET protection diode's amplification coefficient, and the base to determine the transistor's forward voltage between the emitter and base. 4. Measures the gate and gate capacitance of the MOSFET's threshold voltage. 5. Uses a 12864 liquid crystal display with green backlight. Test Ranges: Inductors, capacitors, diodes, diode, transistor, regulator, LED tube, resistance, adjustable potentiometer. Resistance: 0.1 ohm resolution, maximum 50M ohm. Capacitor: 25pf - 100,000 uf. Inductors: 0.01mh-20H. DIY Supplies: ELECTRICAL. Model Number: -T4. AC Current: -T4 Meter Transistor Tester. Measuring Resistance Range: 0.1 ohm resolution, maximum 50M ohm. Operating Mode: -T4 Meter Transistor Tester. Measuring Inductance Range: -T4 Meter Transistor Tester. Display Type: Digital Display. DC Current: -T4 Meter Transistor Tester. Measuring Capacitance Range: 25pf - 100,000 uf. Operating Temperature: -T4 Meter Transistor Tester. Material: plastic. Color: Photo Color. Package Contents: 1 * Transistor Tester. 1 * Box. Only the above package content, other products are not included. Note: Light shooting 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.