Iswishi yezinga likaphethiloli/lamanzi iyithuluzi elibalulekile elisetshenziswa kuzo zonke izinhlelo zokusebenza ukuqapha izinga likaphethiloli noma amanzi emathangeni. Isebenza kusetshenziswa indlela yokuntanta ehamba neleveli yoketshezi. Lapho iflothi ifinyelela endaweni emisiwe, ivula iswishi, ithumele isignali ohlelweni lokulawula. Lesi siginali singaqalisa izenzo ezinjengokuqala iphampu, ukuvala ivalvu, noma ukuxwayisa opharetha. Kwenziwe ngezinto eziqinile, inkinobho yakhelwe ukubekezelela izimo ezinzima futhi iza ngezinhlobo ezahlukahlukene, njengemishini, i-capacitive, ne-ultrasonic, ukuze kufakwe uketshezi oluhlukene nosayizi bamathangi.