tohu putanga UL 924 e mārama ana
Ko ngā tohu putaiao UL 924 he rongoā whakahirahira i te hangarau māmā aitua. Ko ēnei tohu e whakamahi ana i ngā matapae photoluminescent matatau e huinga ana, e puaki ana i te ātaahua noa, kia taea ai te whiti kōmaru ana me te kore hiko. Ko te tiwhikete UL 924 e whakarārangitia ana kia tutuki ngā paerewa haumaru marino a Underwriters Laboratories mō ngā taputapu māmā aitua. Kei roto i ngā tohu ētahi pigment photoluminescent tikangia e hāngai ana i te roa o te ātaahua, e 10 haora neke atu rānei i muri i te porokotia hiko. Ko te hanganga kei roto i ngā matapae kaha, kore mā, e pāmu ana ki te ahi, e pāmu ana ki te rangi, nā reira e taea ana te whakamahi i ngā taiao waho katoa. Ka whakauru aunoa ngā tohu i ngā āhuatanga ātaahua iti, e tuku ana i te arataki maamaa i ngā wā aitua. Kāore he hiko e here ana ki te whakauru, ka iti ake te utu tuatahi me ngā utu tonu mo te tiaki. E arataki ana ēnei tohu ki ngā ture whare me ngā tikanga māmā aitua, tae atu ki ngā here o NFPA 101 Life Safety Code. Ko te hangarau photoluminescent e whakarātonga ana i te mahi tūpono hoki i ngā āhuatanga uaua, nā reira ko ēnei tohu he wāhanga takotoranga o ngā punaha haumaru whare hou.