Rau ib tug "foreman" yuav ua li cas txheeb xyuas qhov zoo ntawm LED zaub, nws tsis nkag siab tag nrho cov zaub LED. Raws li ib txwm muaj, nws yog qhov nyuaj rau cov neeg siv kev ntseeg siab, thiab cov hnub tom ntej yog txhua yam ntawm qhov tseeb.