Iikhabhathi zethu zokulawula uqhushumbo zigqunywe ngokukodwa ukuthintela ugqabhuko-dubulo kwindawo equlethe izinto eziqhumayo ezifana neegesi, umphunga kunye nothuli.
Iikhabhinethi zisetyenziselwa ukugcina izixhobo zokulawula i-industrial kunye nombane ezifana neebhloko ze-terminal, ii-selecter switches kunye namaqhosha okutyhala.Esi sixhobo sinokubangela ugqabhuko-dubulo ngee-arcs zombane okanye ezinye izinto.
Iikhabhinethi zokulawula ukuqhuma zithintela ukuqhuma kwangaphakathi ukuba kusasazeke ngaphandle kwaye kubeka isoyikiso kubomi kunye nepropathi.