Kutumirana nguvamudziyo wekudzora unoshandisa musimboti wemagetsi kana musimboti wemakanika kuti uwane muganho wekunonoka kwenguva. Une mhando dzakawanda, dzakadai semhando yemhepo inodzima, mhando yemagetsi uye mhando yemagetsi. Nguva dzinodzokororwa dzinogona kukamurwa kuita mhando mbiri: rudzi rwekunonoka kwenguva rwakagwinya uye rudzi rwekunonoka nguva yekudzimwa. Air-damped time relay dzine nzvimbo yakakura yekunonoka (0.4 ~ 60s uye 0.4 ~ 180s), iri nyore muchimiro, asi haina kunyatsojeka.
Kana coil yawedzerwa simba, armature nemapallet zvinokwezvwa nepakati uye zvinofamba pasi ipapo ipapo, zvichiita kuti chiito chibatane pakarepo kana kuti chidzimwe. Asi tsvimbo yepiston ne lever hazvigone kutevera armature pamwe chete nekudonha, nekuti mugumo wepamusoro wetsvimbo yepiston wakabatana nerabha membrane mukamuri yemhepo, kana tsvimbo yepiston pakuburitswa kwechitubu yatanga kufamba pasi, rabha membrane pasi yakakombama, imba yemhepo iri pamusoro pemhepo inotetepa uye tsvimbo yepiston inonyorova uye inodonha zvishoma nezvishoma. Mushure menguva yakati, tsvimbo yepiston pasi kune imwe nzvimbo, ichasundidzira chiito chekubata kunonoka kuburikidza ne lever, kuitira kuti dynamic break contact ibve, dynamic contact ivharwe. Kubva pa coil ine simba kusvika pakubata kunonoka kwenguva kuti ipedzise chiito, nguva ino inguva yekunonoka kwe relay. Kureba kwenguva yekunonoka kunogona kuchinjwa nekugadzirisa saizi yegomba rekupinda mukamuri yemhepo nesikuruu. Mushure mekunge coil yekukwezva yabviswa simba, relay inodzoka nekuita kwechitubu chekupora. Mhepo inoburitswa nekukurumidza kuburikidza negomba rekuburitsa mweya.