Qalabka loo isticmaalo kontoroolka hawada fog, hawo qaboojiyaha fogaanta ayaa ugu horeyn ka sameysan guddi wareeg ah oo isku dhafan iyo badhamada loo isticmaalo soo saarista farriimaha kala duwan.Chip microprocessor ah oo soo saara calaamada kontoroolka fog, oscillator crystal, transistor amplification, diode iftiimiya infrared, iyo matrix kiiboodhka ayaa ah inta badan kontoroolka fog.