SainSmart SM-328 Transistor Tester Capacitor ESR Inductance Resistor Meter LCR NPN PNP MOS using the latest 2016 version software, M328 chip, more features micro-controller uses 8MHz external crystal, measurement accuracy is better. LCD using 12864 LCD screen that can display measured data and graphics. main chip dual in-line with a socket, ideal for electronics enthusiasts upgrade or replace the chip. Current: When 9V voltage, stable operating current of about 20mA. Microcontrollers 8MHz external crystal, the measurement accuracy is better. Accuracy of dependent resistor using thousandth resistance, the rest also used the hundredth resistance. Built-in 9V laminated battery. Having an external DC power jack, prolonged use of more economical. LCD backlit LCD screen with low power consumption, compared with the overall power consumption is almost negligible, so the presence of the backlight time, easy reading in the dark.