Kwa "mtsogoleri" momwe angadziwire mtundu wa chiwonetsero cha LED, sakumvetsetsa bwino chiwonetsero cha LED. Nthawi zonse, zimakhala zovuta kupangitsa wogwiritsa ntchito kuti akhulupirire, ndipo masiku otsatirawa ndi mitundu yonse yowona.