Feem ntau, kev tso tawm ib nrab tshwm sim ntawm qhov chaw uas cov khoom ntawm cov khoom siv dielectric tsis sib xws.
Gas-insulated hlau-enclosed keyboards (GIS) thiab roj-insulated hlau-kab kis kab mob (GIL) yog ib qho ntawm cov khoom siv tseem ceeb tshaj plaws hauv lub zog hluav taws xob.Lawv muaj ob txoj haujlwm ntawm kev tswj thiab kev tiv thaiv.