led sensor light Instructions:
 
1. Turn on the power switch, the tube turns into the boot stage: at this stage the lamp brightness is
    100%, continue for 5-10 seconds, then brightness reduced from 100% to 20%.
2. The tube turns into the environment detection stage: at this stage the brightness of the tube is
    still 20%, continue for 5-10 seconds.
3. The tube turns into the intelligent control stage: when a person enters microwave induction coverage
    (radius 5-8 meter), the tube brightness is 100%; if there have been people activities in the microwave 
    range, the brightness always keep 100%. When people leave the microwave range after 20 seconds,
    the brightness automatically reduced to 20%.
4. 3 seconds later, someone into the microwave range once again, the tube automatically light up
    to 100%. People leave after 20 seconds, the brightness automatically reduced to 20%.