I-XDB307-2 & -3 & -4 uthotho lwezidluliseli zoxinzelelo zinjongo- zakhelwe usetyenziso lwefriji, zisebenzisa ii-ceramic piezoresistive sensing cores ezigcinwe kwizivalo zobhedu. Ngoyilo oluhlangeneyo kunye nolusebenzisekayo, kunye nenaliti yevalve eyenzelwe ngokukodwa izibuko loxinzelelo, aba bathumeli baqinisekisa ukusebenza kakuhle kombane kunye nokuzinza kwexesha elide. Eyilwe ukuhlangabezana neemfuno ezifunekayo ze-compressor zefriji, ziyahambelana neefriji ezahlukeneyo. Isetyenziswe ngokubanzi kwishishini le-air conditioning kunye nefriji, i-transmitter inikeza imilinganiselo yoxinzelelo oluchanekileyo kunye noluthembekileyo.