He pai mo te whakamahi i roto i te IIA,IIB,IIC Pahūtanga hau kino rohe1 me te rohe2. Te puehu ngiha IIIA,IIIB,IIIC rohe 21 me te rohe 22 Tohu o mua: Ex db IIC Gb,Ex tb IIIC Db. Tiwhikete ATEx.Nama:SEV 20 ATEX 0471 U Tiwhikete IECEx.Nama: IECEx SEV 20.0016U