Start Detection Function Added: Automatically detects NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, transistors, capacitors, and other components. Automatic Testing & Display: Automatically tests components and displays them on the LCD screen. Determines the forward bias of emitter transistors by detecting the amplification factor and base of the transistor, MOSFET protection diode, etc. Measure MOSFET Gate Threshold Voltage and Gate Capacitance: Displayed on a 12864 LCD screen (128*64 characters). Higher Test Speed & Efficient Component Testing: Tests components within 2 seconds (larger capacitors may take longer, up to 1 minute, which is normal). One-Button Operation: Simple one-button start for testing. Low power consumption in standby mode (<20 nA). Automatic shutdown feature to prevent unnecessary waste, save battery power, and extend battery life. PCB Size: 63x71 mm, Weight: approx. 48g LCR-T4 Multifunction Graphic Tester: Measures resistance, capacitance, diodes, SCRs, inductance, transistors, and MOSFETs. 12864 LCD Display: Features a backlight, typically green-yellow. Power Supply: Uses a 9V stacked battery. For extended use, a power supply from 2 lithium batteries (8.4V) can be used. Type: B - Module Color: As shown Material: PC + Metal Package Contents: 1 x ESR Meter Transistor Tester Only the above package content is included. Other products are not. Note: Light photography and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.