Features:This integrated circuit tester can be used to test logic chip, 74HC, 74LS, CD40, 45/145, driver, operational amplifier, comparator, optocoupler, diode, Zener diode, light emitting diode, triode, field tube, thyristor and other types of chips.Built-in more than 1300 kinds of chip data models, more than 420 kinds of transistor data models.Cover most common 24-pin general purpose devices that can significantly reduce workload and increase productivity.Built-in large capacity lithium battery to supplys power, so you can recharge it in time.If there is no operation after 60 seconds, the machine will automatically shut down to save energy.The operation button design, simple and convenient operation.