I've bought the kit and it is a complete with al parts you need.
For the price you can't buy al the components en pcb is very good.
Handy is the DC jack, so I can Use and 12 Volt adapter,
no worry of dead battery when I need the tester.
Replaced the 680 and 470 resistors with 0.1% types and
replace TL431 with LM4040AIZ.
For better accuracy.
Main purpose for me is the ESR check for capacitors,
wich works very well.
checked with capacitor and the result was 210 uF and ESR 0.06 ohm.
with a resistor of 0.1 ohm in series I get 209 uF and ESR 0.16 ohm.
I have an good Fluke meter with capacity test which is good,
but capacity is not only important to check, ESR is also an important value
Very handy for checking what for transistor type is this and what is the pinout.
New version of software works fine. Revision 680