I have over time eight (8) bought and installed piece of it. Gradually these have failed. This "failure" seems that these no longer turn and remain permanently ON. Very annoying when you consider that some have not even been made half a year old.
Then there are so slow ago by the reaction some that you just turn on the light when you're already gone through the area to be detected.
And do not worry, there is neither too much nor too little current collector were connected.
Therefore, I can not recommend this motion unfortunately.