Ishuthela yomhlophe, bekuthiwa nangokuba yisithuthi esivivinyayo kanye nesithuthi singcono umhlophe, iyisithuthi esibalulekileyo ekulindelweni komhlophe eziphakamini. Iyadunyelwe ngamacanjabanjalo okanye amaphaneli angenhla, engenza ukuba akhishwe ngokushesha ukuvela kwemeko yokwehlisa ukuphathwa komhlophe nezindleke. Amacanja esi shuthela iyahluka izinto ezijwayelekileyo njengegolide noma izinto ezingcono umhlophe. Izincazi zegolide ziyavivimba kakhulu fengenza ukuba zingcine ubushushu obukhulu obukhiwe yomhlophe. Noma kunjalo, izincazi eziphambene ngegolide kungaba uyavumela ubukhosi begolide noma ukusebenza kwezinye izinto, engenza ukuba kungenhle ukwenzela izimo zomhlophe. Izincazi zomhlophe zilandelayo emaphakamini, njengokudlulwa kwezinye izindawo, phakathi kwezinye iindlela, futhi ngokoqobo kwezinye izicelo. Uma kubekwe omhlophe, kungakhishwa ngokuzenzekelayo ngokuvumeleka nokuhlola umhlophe noma ngokwenza ngabantu abasekhaya. Uma kuvalelwe, isithuthi sikhala pansi noma ivale indlela, engenza ukuba kungekho ukuphathwa komhlophe kumaqo ethekwayo. Kunezincazi ezinhle zomhlophe ezinezinto ezifakiweyo, njengokuba zenze ukwehlisa izindleke. Lezi zenza ukuba kube yilowo umhlophe kodwa futhi izindleke, okungaba yinkinga enkulu, ikhutshelwe. Bekuthiwa nazo inkinobodlo le- signal, okuyiza imininingwane yesimo sesithuthi (livuli noma ilala) kwiqela lokulinda lomhlophe leziphakamini. Izincazi zomhlophe zinemisebenzi eyodwa ekugxileni kweziphakamini uma kubekwe omhlophe, engenza ukuba kungenhle ukulala bantu futhi ukuba amafayela agcinwe. Ukuhlelwa kahle, ukulondoloza nokuthenga kwezinye izinto zibalulekile ukuthi zisebenze ngendlela efanele xa kudingeka kakhulu. Abakhokho nezinkhankatha zekhaya kufanele bavikele amatheko nezombuso zokulandela ukulanda nekusebenzisa izincazi zomhlophe ukuze bakhiphe isebentha seziphakamini nezabo.