Bests & Worsts Reviews from Amazon

I wonder why people post fake reviews? I bought this item trusting the reviews. Here is an honest review. This item is PRE-PROGRAMMED to turn red, yellow and then green, no matter how clean/dusty/smelly your room is. I tested it by letting it turn green and then I turned the purifier off. The very next second I turned it on. You would imagine in a few seconds it would display green but no it still took the exact same time to turn yellow and then green. I experimented a couple times and realized, boy this item is such a fake. Check the video. I did not have the patience to hold the camera for another 15 min till it would turn green.