Ngokusekelwe kumgomo wokushisa, i-probe evaliwe iqukethe izinto ezimbili eziphikisayo, enye yazo eshiswa njengokumelana nokutholwa kanti enye ayishisi njengokumelana nereferensi.Lapho okuphakathi kugeleza, ukushisa ekushiseni kokushisa kuyasuswa futhi inani lokumelana liyashintshwa.Azikho izingxenye ezinyakazayo, azinakekelo, kulula ukuzifaka, uhlobo olulodwa lufanele izimfuneko ezihlukahlukene zobubanzi bepayipi, shintsha ivolumu ngokuqhubekayo evumelana nesikhangiso, ukulahlekelwa kwengcindezi ephansi kakhulu, isakhiwo esihlangene, ukugeleza kokuboniswa kwe-LED nesimo sokushintsha.