Iswishi yezinga likaphethiloli/lamanzi iyithuluzi elibalulekile elisetshenziswa ezinhlelweni ezihlukahlukene ukuthola izinga likaphethiloli noma amanzi ethangini. Isebenza ngokusebenzisa umshini wokuntanta okhuphukayo noma owehlayo nezinga eliwuketshezi. Lapho iflothi ifinyelela ezingeni elinqunywe kusengaphambili, icupha iswishi, ithumele isignali ohlelweni lokulawula. Lesi siginali singasetshenziswa ukuqalisa izenzo ezinjengokuqalisa iphampu, ukuvala ivalvu, noma ukuxwayisa opharetha. I-level switch ngokuvamile yenziwa ngezinto ezihlala isikhathi eside ukuze imelane nezindawo ezinokhahlo futhi itholakala ngezinhlobo ezahlukene, okuhlanganisa imishini, i-capacitive, ne-ultrasonic, ukuze ivumelane nezinhlobo ezahlukene zoketshezi nosayizi bamathangi. Idlala indima ebalulekile ekuvimbeleni ukuchichima kanye nokuqinisekisa ukusebenza kahle ezimbonini, ezezimoto, nezilungiselelo zokuhlala.