Ephathekayo, i-microcomputer, enamandla, ulungelelwaniso oluzenzekelayo, inokuqhagamshelwa kumshicileli.
Isetyenziselwa ukulinganisa iqondo lokusasazwa kokukhanya okuveliswa yintwana enganyibilikiyo enqunyanyiswe emanzini okanye kulwelo olubonakeleyo, kunye nokubonakalisa ngokobungakanani umxholo wale masuntswana amisiweyo. Ingasetyenziswa ngokubanzi kumlinganiselo we-turbidity kwizityalo zamandla, izityalo zamanzi ahlambulukileyo, izityalo zamanzi, iindawo zokucocwa kwamanzi amdaka asekhaya, izityalo zesiselo, amasebe okukhusela okusingqongileyo, amanzi amashishini, iwayini kunye namashishini amayeza, amasebe okuthintela ubhubhane, izibhedlele kunye namanye amasebe.