The QooPow™ qualMeter Basic (the Blue one) has 6 LED indicators to light up the different status of a tested cable or charger in sequence. The LED Indicators are grouped by Green, Yellow, and Red LEDs, which are corresponding to Good, Fair(OK) and Bad qualities in general. It works with both Cable Test and Charger Test mode.
So you only need to know Green, Yellow and Red to understand what's going on with your cable/charge. It's really just that simple!