Function: 1. Key operation, boot test, key to get. 2. Large LCD display with backlight function for easy reading. 3. Automatically test pin elements and display them on the LCD display. 4. Automatic detection of components such as NPN bipolar transistors, PNP, N channel and P channel MOSFET transistors, diodes (including dual diodes), thyristors, transistors, resistors and capacitors, etc. 5. It can detect the conduction polarity voltage of the transistor emitter, MOSFET protection diode and gain factor reference. Specification: This meter is a small tool for engineer, electronic service and factory. It is very easy to test plug and SMD devices, it can also test different kinds of diodes, triodes, thyristors, enables analysis of device type, pin polarity, output HFE, valve voltage, FET connector capacity. Characteristics: Key operation, boot test, key to get. Large LCD display with backlight function for easy reading. Automatically test pin elements and display them on the LCD display. Automatic detection of components such as NPN bipolar transistors, PNP, N and P channel MOSFET transistors, diodes (including dual diodes), thyristors, transistors, resistors and capacitors, etc. It can detect transistor emitter conduction polarity voltage, MOSFET protection diode and gain factor reference. Measurement of MOSFET gate threshold voltage and gate capacity. Specification: Brand: BSIDE Model: ESR02 Pro Resistor: 0Ω - 50Ω, resolution: 0,01 oma Capacity: 25pF - 100mF, Resolution: 1pF Inductance: 0,01 mH - 20 H, resolution: 0,01 mH ESR capacitor resolution: 0,01 Ω Battery: 1 pc. Black color Size: ok. 14 x 8 x 4.5 cm/5.5 x 3.1 x 1.8 inch Weight: ok. 214 g/7,5 oz Use of instructions: Press "POWER/TEST" to turn on and start the test, many measurements can be repeated with this key, automatic power off 20 seconds after measurement. Provide three kinds of sockets, each pin 1, pin 2 and pin 3 are connected. Placing the device does not require the order of instructions, and the screen displays the component function of each pin when measured. On the back there is a table “typical ESR value of electrolytic capacitor”, serving only as a guideline, these are typical values for a standard electrolytic capacitor at room temperature. Calibration: Fasten the test pins 1, 2, 3 together and press the "POWER/TEST" button, then the screen will prompt you to enter calibration, press the button again within 2 seconds to confirm. A few seconds later, the screen will prompt you to release pins 1, 2, 3, release them and wait for the calibration to complete. List of packages: 1 x tester transistors 1 x User Manual