Mawdaw relay ni hpe bungli galaw ai ladat hte maren, wan n-gun, solid-state, hte hybrid ngu ai masum hku garan mai ai. Wan n-gun relay ni gaw wan n-gun coil hpe lang nna, matut mahkai ai lam ni hpe shachyut na matu magnetic field hpe shapraw ya ai; shanhte gaw asan sha nga ai raitim, n-gun n rawng ai aten (10-30ms daram) nga ai. Solid-state relays ni gaw semiconductor jak ni (MOSFETs zawn re ai) hpe lang nna, matut mahkai lam n nga ai sha galai shai ai lam hpe lu la na matu, mahtai jaw ai aten gaw microsecond madang de du wa ai, raitim manu grau law ai. Hybrid relays gaw ndai amyu lahkawng a akyu ni hpe kahkyin gumdin nna, n-gun kaba ai galai shai ai lam ni a matu htuk manu nga ai.
Mawdaw hkang ai relay ni gaw mawdaw electronic hkang ai ladat ni hta ahkyak ai daw ni rai nna, hkang ai ladat hte hkang ai ladat ni lawm ai. Ndai jak ni gaw, wan n-gun kaji ni hte wan kaba ni hpe hkang lu na matu, electromagnetic induction ngu ai npawt tara hpe jai lang ai. Mawdaw ni hta grau jai lang ai electronic arung arai langai mi hku nna, mawdaw a nhtoi, wiper, starter, air conditioning zawn re ai mawdaw arung arai ni hta grai lang ai rai nna, mungkan ting hta shaning shagu ra kadawn ai gaw wan wan 1 jan rai nga ai.
Mungdan kata na mawdaw hkang ai relay ni hpe madung hku nna lang ai mawdaw ni hte maren lahkawng hku garan nna galaw ai: langai gaw European mawdaw ni a hkrang sumla hku galaw ai relay ni rai nna, madung hku nna German hte French hpaji masa hpe jai lang ai mawdaw ni hta lang ai; kaga langai mi gaw Japan mawdaw ni a hkrang hku galaw ai relay ni rai nna, Japan mawdaw ni hta madung lang ai.
