Relay ye otomatiki kunnafoni-falen-minɛn ye min bɔli bɛ Yɛlɛma yɔrɔnin kelen ni donna (kuran, magɛnni, mankan, ɲɛnayeli walima funteni) sera hakɛ dɔ ma.
Ni tension (kurunba) walima kurunba dɔ bɛ Kɛ kuran-magnetiki-relay (kurunba) ka bobine (bobine) kan, magnétique (kurunba) min bɛ Bɔ bobine (bobine) fɛ, o bɛ Tɛmɛ magnétique (magnetiki) sɛrɛkili fɛ min bɛ Kɛ ni nɛgɛ-kɔnɔna, jogin, armature ani baarakɛ-fiɲɛ-yɔrɔ ye. Magɛnni fanga ka fanga kɔrɔ, armature bɛ sama ka taa nɛgɛdaga ka jirisunba ɲɛda la, o la, a bɛ fɛn minnu datugulen don cogo bɛnnen na, olu gɛlɛya ka da wuli ani fɛn minnu bɛ da wuli cogo bɛnnen na, olu ka da. Ni tension walima current min bɛ bobine kan, o ka dɔgɔ ni hakɛ dɔ ye, masin ka walekɛcogo fanga ka bon ni kuran samali fanga ye, armature bɛ segin a cogo fɔlɔ la, contacts minnu dabɔlen don cogoya la, olu bɛ da wuli, contacts normalement closed bɛ da.
O la, mobili relay bɛ se ka jate iko jɛkulu min bɛ kɛ ni kunnafoni-di-sira ye min bɛ baara kɛ ni bobine ye ani sɛrɛkiliba min bɛ baara kɛ ni kontakw ye. Relais ka control circuit kɔnɔ, baarakɛ-kurun fitinin dɔrɔn de bɛ yen. O bɛ kɛ bawo baarakɛ-switch (switch) ka ɲɔgɔnkanu seko ka dɔgɔ, wa a tɛ se ka kɛ ka doniw kɔlɔsi k’a ɲɛsin u ma ni kuran ɲininibaw ye; a ka on/off cogoya bɛ se ka kɔlɔsi dɔrɔn relay contacts fɛ.
Relay ye 'switch (switch) ye min bɛ 'kùnnafoni-falen-falen Kɛ ani fɛn min bɛ kɔrɔsi (actuator). Ni an ye fɛnɲɛnamafagalan pɔnpe relay ta misali la, o ye fɛnɲɛnamafagalan pɔnpe ka kunnafoni sɛgɛsɛgɛlikɛlan ye. Nka, fɛnɲɛnamafagalan pɔnpe relay ka bobine bɛ se ka sɛrɛkili kɛ dɔrɔn ka tɛmɛ ɛntɛrinɛti kunnafoni-falen-falen yɔrɔ fɛ ni bolifɛn-transistor (transistor) min bɛ ɛntɛrinɛti kunnafoni-falen-falen kɔnɔ, o dabɔra.
