Amalambu ezimoto, afaka phakathi amalambu, amalambu angemuva, amalambu enkungu, namasignali ajikajika, anamazinga ahlukene okulinganisa angangeni manzi, okwaziwa nangokuthi isilinganiso se-IP (Ingress Protection). Isistimu yokulinganisa ye-IP isetshenziselwa ukuhlukanisa izinga lokuvikela isistimu yokukhanyisa enalo ekungeneni kwezinto zangaphandle njengothuli, ukungcola, namanzi.
Isilinganiso se-IP siqukethe amadijithi amabili, idijithi yokuqala ikhombisa izinga lokuvikela ezintweni eziqinile, kanti idijithi yesibili ikhombisa izinga lokuvikela emanzini. Uma idijithi iphakeme, izinga lokuvikela liphakeme.
Isibonelo, i i-oem led headlights ngesilinganiso se-IP esingu-67 kungasho ukuthi ayifaki uthuli futhi ingamelana nokucwiliswa emanzini kuze kufike kumitha elilodwa imizuzu engu-30. Ngokufanayo, ukukhanya komsila okunesilinganiso se-IP esingu-68 kungasho ukuthi ayiqinile uthuli futhi ingamelana nokucwiliswa emanzini angaphezu kwemitha elilodwa.
Izilinganiso ze-IP ezisetshenziswa kakhulu izibani zemoto i-IP67 ne-IP68, kanti ezokugcina ziyizinga eliphezulu lokuvikela emanzini. Lezi zilinganiso zibalulekile kubathandi bangaphandle kwemigwaqo abadinga izimoto zabo ukuze zimelane nesimo sezulu esibi nezimo zezwe.
Ngokungeziwe esilinganisweni se-IP, izibani zemoto zingaphinda zibe nezinye izici zokuzenza ziqine futhi zihlale isikhathi eside. Isibonelo, ezinye izibani zangaphambili zinelensi ye-polycarbonate ekwazi ukumelana nokuklwebheka futhi ingashayi, okuwenza mancane amathuba okuthi aphuke phakathi nokusetshenziswa kabi komgwaqo.
Isilinganiso samalambu emoto angangeni amanzi siwukucatshangelwa okubalulekile kulabo abasebenzisa izimoto zabo ezingekho emgwaqeni noma ezindaweni ezinesimo sezulu esibi kakhulu. Izilinganiso ze-IP ephezulu nezinye izici ezihlala isikhathi eside zingasiza ukuqinisekisa ukuthi izibani zezimoto zisebenza kahle futhi ngokuphepha kulezi zindawo.