With more than 1300 built in chip data model and more than 420 transistor data model, covering the most common devices within 24 pins, improving work efficiency. Including logic device test, interface driver device test, operational amplifier, comparison test, transistor identification, voltage regulator voltage value test, optocoupler. Testing 74HC series, 74LS series, CD4000 series, HEF400 series, 4500 series, operational amplifiers, interface chips, optocouplers, automatic transistor identification, voltage identification of voltage regulators, etc. Multifunction IC tester is a professionally designed for microelectronics engineers and maintenance personnel. You can choose 5V mode, 3.3V mode, AUTO mode and so on. The integrated circuit tester automatically shut down after 60 seconds without any operational, providing you with more convenience., Weight: 0.32738645907 pounds, Manufacturer: Aisuoka