Ko ngā pūahi mura, e mōhiotia whānuitia ana ko ngā pūahi ahi, ka mahi hei pāorooro o te tukunga piezoelectric ngaohiko teitei mai i te arai ngaohiko teitei (pūahi mura), ka pakaru te hau i waenga i ngā irahiko o ngā pūahi mura, ka whakaputa i ngā mura hiko hei whakakā i te ranunga hau i roto i te rango. Ko ngā āhuatanga taketake o te mīhini mahi teitei: he pūahi pūmau teitei, he ranunga ōrite, he ōwehenga kōpeketanga teitei. Ko ngā motuka he mīhini mura ā-roto e whakamahi ana i te penehīni me te wahie tīhi. I roto i te mākete motuka o Haina, he nui te wāhanga o ngā motuka penehīni. He rerekē ngā miihini penehīni i ngā miihini tīhi nā te mea he teitei ake te pūwāhi mura o te penehīni (tata ki te 400 nekehanga), e hiahia ana kia whakakāhia te ranunga. Mā te tukunga i waenga i ngā irahiko hei whakaputa i ngā mura, ka tahuna te miihini penehīni i roto i te ranunga wahie me te hau i te wā tika hei whakaputa hiko, engari hei wahie penehīni ahakoa i roto i te taiao pāmahana teitei he uaua ki te tahuna ohorere, kia taea ai te tahunga i te wā tika me whakamahi te "ahi" hei whakakā. I konei ko te whakakā mura ko te mahi "pūahi mura".
