While 2–channel PicoScope 4225 Kit is suited for occasional use or for those on limited budget, 4–channel PicoScope 4425 Kit allows user to diagnose more complex problems and save time by testing more signals simultaneously. Kits come complete with basic set of leads and clips to perform common tasks such as testing sensors, relative compression, and cylinder balance. PicoScope 6 software provides features such as automated measurements and ability to save and print waveforms.