Croover cable yosinthika yokhazikika ndi makina okhazikika ozungulira omwe ali ndi malo okwera osinthika / ocheperako komanso cholumikizira komanso cholumikizira chomwe chimapereka zosankha zam'mapiri. Closever imasinthana kuti ipereke mosamala njira zingapo zochitira masewera olimbitsa thupi.
Makina osinthika okhazikika ndi kuchuluka kwa zida zogulitsa masewera olimbitsa thupi, zolumikizidwa ndi chibwano chambiri chimatha, ndipo zingwe zingapo zomwe zimathamangiridwe pochita masewera olimbitsa thupi. Makina osinthika osinthika omwe amalumikiza zomwe zimaphatikizira zokutira zowonjezera mu matupi olemera, kulola pafupifupi minofu iliyonse ya thupi kuti iphunzitsidwe pamakina amtundu umodzi kapena digilonal.