Ukuhanjiswa kwexeshasisixhobo solawulo esisebenzisa umgaqo we-electromagnetic okanye umgaqo womatshini ukufezekisa ulawulo lokulibaziseka kwexesha. Ineentlobo ezininzi, ezifana nohlobo lokudambisa umoya, uhlobo lombane kunye nohlobo lombane. Ugqithiso lwexesha lunokwahlulwa lube ziindidi ezimbini: uhlobo lokulibaziseka kwexesha elinamandla kunye nodidi lokulibaziseka kwexesha lokucima amandla. I-air-damped time relays inoluhlu olukhulu lokulibaziseka (0.4 ~ 60s kunye ne-0.4 ~ 180s), ilula kwisakhiwo, kodwa ichanekile.
Xa i-coil inamandla, i-armature kunye ne-pallets zitsalwa ngumbindi kwaye zihamba phantsi ngokukhawuleza, zenza uqhagamshelwano olukhawulezayo lwesenzo okanye lucime. Kodwa intonga ye-piston kunye ne-lever ayinakulandela i-armature kunye nokuhla, kuba isiphelo esiphezulu sentonga ye-piston sidityaniswe kwinwebu yerabha kwigumbi lomoya, xa intonga yepiston ekukhululweni kwentwasahlobo yaqala ukuhla, i-rubber inwebu phantsi kwe-concave, igumbi lomoya ngaphezu komoya liya lincinci kwaye intonga yepiston iyancipha kwaye iyancipha ngokukhawuleza. Emva kwexesha elithile, intonga yepiston ihle iye kwindawo ethile, iya kutyhala inyathelo lokulibaziseka lokunxibelelana nge-lever, ukuze uqhagamshelo oluguquguqukayo luvaliwe, unxibelelwano oluguqukayo luvaliwe. Ukusuka kwikhoyili enikwe amandla ukuya kunxibelelwano lokulibaziseka kwexesha ukugqiba isenzo, eli xesha lixesha lokulibaziseka kwe-relay. Ubude bexesha lokulibaziseka bunokutshintshwa ngokulungelelanisa ubungakanani bomngxuma wokungena kwigumbi lomoya nge-screw. Emva kokuba i-coil ekhangayo i-de-energized, i-relay ibuyisela ngesenzo somthombo wokubuyisela. Umoya ukhutshwa ngokukhawuleza ngomngxuma wokukhupha umoya.