Features 【Auto Component Detection】 – Digital component tester automatically identifies NPN/PNP transistors, MOSFETs, diodes (including dual diodes), resistors, capacitors, and thyristors. for quick troubleshooting in electronics repair and prototyping. 【Backlit LCD & Clear Readings】 – SMD transistor tester with large 1602 LCD with backlight displays component parameters like HFE, gate capacitance, and forward voltage. Ideal for low-light workshops or detailed SMD component analysis. 【Multi-Function Testing】 – SMD transistor tester measures capacitance (25pF-100mF), inductance (0.01mH-20H), and (0Ω-50MΩ) with 0.01Ω resolution. Includes ESR testing for capacitors to detect faults in circuits. 【Portable & User-Friendly】 – Electronics maintenance tool is a compact design (14x8x4.5cm) powered by a 9V battery (not included) or 9-12V adapter. One-key with auto shutdown saves time for engineers and hobbyists. 【Calibration & Reference Guide】 – MOSFET/Thyristor analyzer, built-in calibration mode and electrolytic capacitor ESR reference table for accurate diagnostics. Essential for PCB maintenance, factory production, and educational labs. Specification: This meter is a small tool for the engineer, electronic maintenance and factory. It is very easy to test plug-in and SMD devices, also can test different kinds of diodes, triodes, thyristors, enable to analysis the device type, the polarity of the pin, the output HFE, the valve voltage, the junction capacitance of the FET. Features: A key , boot test, a key to get. Large LCD display with backlight function for easy reading. Automatically test the pin elements and display them on the LCD. Automatic detection of components such as NPN, PNP bipolar transistors, N-channel and P-channel MOSFET, diodes (Including double diodes), thyristors, transistors, resistors and capacitors, etc. Can detect transistor emitter forward bias voltage, MOSFET diode and amplification factor reference. MOSFET gate threshold voltage and gate capacitance measurement. Specification: Brand: BSIDE Model: ESR02 Pro Resistor: 0Ω~50Ω, Resolution: 0.01 ohm Capacity: 25pF~100mF, Resolution: 1pF Inductance: 0.01mH~20H, Resolution: 0.01mH Capacitor ESR Resolution: 0.01Ω Battery: 1pcs x 9V 6LR61 Battery (NOT included) Color: black Size: Approx. 14*8*4.5cm/5.5*3.1*1.8inch Weight: Approx.214g/7.5oz Using Instruction: Push POWER / TEST to power on and start a test, multiple measurements can be repeated by this key, auto power off 20 seconds after measurement. Provide three kinds of socket, each socket pin 1, pin 2 and pin 3 are connected. The placement of the device does not require the order of instruction, and the screen displays the component function of each pin after measuring. There is a table typical ESR value of electrolytic capacitor at the back, it is for guiding only, these are typical value for standard grade electrolytic capacitor at room temperature. Calibration: Short the test pin 1, 2, 3 together and push Package List