Check the listing for details. LCR-T4 Mega428 Backlit Component Tester ESR Meter Kit LCD Display With Case DIY. Condition: New. Listed at 23.97 USD. A great overall tester for many of your common components. Later M328 version of the software that gives more functions. The chip is a Atmega328.128mm x 64mm and a big backlight LCD display with only a 2mA draw when on standby. Uses a standard 9V battery (Not included). Board is all completed and ready to use however, the case will need assembly. Check this unit out on YouTube, many great uses! Tests; Inductors, Capacitors, Diodes, Dual diode, MOS, transistors, SCR (Silicon Controlled Rectifiers), Regulators, LEDs , ESR. Resistance :0.1 ohm resolution, maximum 50M ohm Capacitor : 25pf -100,000 Uf and Inductors : 0.01mh-20H Other Features: * Automatic detection of NPN and PNP transistors, n-channel and p-channel MOSFET,diode (including double diode), thyristor, transistor, resistor and capacitor and other components* Automatic test the pin of a component, and display on the LCD* Can detect the transistor, MOSFET protection diode amplification coefficientand the base to determine the emitter transistor forward biased voltage*Measure the gate and gate capacitance of the MOSFET threshold voltage* 12864 liquid crystal display with green backlight* One button operation, automatic shutdown .* Only 20nA shutdown current.* Automatically detect NPN, PNP bipolar transistors , N -channel and P -channel MOSFET, Field Effect Transistors, diodes , two diodes, thyristors small power unidirectional and bidirectional thyristor.* Automatic identification components pin arrangement .* Measuring bipolar transistor current amplification factor and base - emitter threshold voltage.* Via the base - emitter threshold voltage and high current amplification factor to identify Darlington transistors.* Can detect bipolar transistors and MOS transistors protection diodes.* Measuring the gate MOSFET threshold voltage and the gate capacitance.* Can simultaneously measure two resistors and resistor symbol is displayed.** Note: Before measuring capacitance the capacitor should be discharged! Otherwise, it may damage the meter. Some instructions are on our website. or we can email you the actual PDF. © Wired Communications, LLC. All Rights Reserved.