Nkọwa Dị Mkpirikpi:

Oge rolav ie an automatie controlunit whihoon bo oombinod with unrioue othor

olootriononuinmont ka ronlivo automatie eontrol eftheunning circuit. Mgbe a na-ahazi ya

oge agwụla, a ga-emechi ma ọ bụ mepee mmepụta kọntaktị ahụ. yabụ na eletriki njedebe ahụ ga-akwụsị

ngwaọrụ nwere ike ịgba ọsọ ma ọ bụ kwụsị na akpaghị aka.

Usoro relay oge a nwere uru nke oke voltaji ọrụ sara mbara, doro anya

ntuziaka ọrụ, obere olu, nha nha otu, ntinye dị mfe, wdg.