I-transmitter yi-converter eguqula umqondiso wokuphuma kwe-sensor ibe ngumqondiso onokubonwa ngumlawuli (okanye umthombo wesignali oguqula igalelo lamandla angenawo umbane ukusuka kwi-sensor ukuya kwiimpawu zombane kwaye kwangaxeshanye ikhulise isidluliseli imilinganiselo ekude nolawulo).
I-sensor kunye ne-transmitter kunye zenza umthombo wesignali elawulwa ngokuzenzekelayo.Ubuninzi bomzimba obuhlukeneyo bufuna i-sensor ezahlukeneyo kunye nee-transmitter ezihambelanayo, ezifana nesilawuli se-thermostat ye-industrial ine-sensor ethile kunye ne-transmitter.