Hasumiyar watsawa, wanda kuma aka sani da hasumiya na watsawa ko na'urorin watsawa, wani muhimmin bangare ne na tsarin watsa wutar lantarki kuma yana iya tallafawa da kare layin wutar lantarki. Waɗannan hasumiya sun ƙunshi manyan firam ɗin sama, masu kama walƙiya, wayoyi, jikin hasumiya, ƙafafun hasumiya, da sauransu.

Babban firam ɗin yana goyan bayan layin wutar lantarki kuma yana da siffofi daban-daban kamar siffar kofin, siffar cat, babban siffar harsashi, ƙananan siffar harsashi, siffar ganga, da dai sauransu. Ana iya amfani dashi dontashin hankali hasumiyai, hasumiya mai linzami, kusurwa hasumiya, canza hasumiya,tasha hasumiyai, kumagiciye hasumiyai. . Masu kama walƙiya yawanci suna ƙasa don ɓata hasken walƙiya da kuma rage haɗarin wuce gona da iri a sakamakon faɗuwar walƙiya. Direbobi suna ɗauke da wutar lantarki kuma an shirya su ta hanyar da za a rage asarar makamashi da tsangwama ta hanyar lantarki ta hanyar fitar da korona.

Jikin hasumiya an yi shi da karfe kuma an haɗa shi da kusoshi don tallafawa tsarin ginin gabaɗaya da kuma tabbatar da amintaccen nisa tsakanin masu gudanarwa, masu gudanarwa da wayoyi na ƙasa, masu gudanarwa da jikunan hasumiya, masu gudanarwa da ƙasa ko abubuwan hayewa.

Ƙafafun hasumiya yawanci anga su ne a kan simintin ƙasa kuma ana haɗa su da kusoshi na anka. Zurfin da aka binne ƙafafu a cikin ƙasa ana kiransa zurfin hasumiya.