... free, non-corrosive, flammable and explosive gases DYL1-100, 225 residual current monitoring electrical fire detectors, applicable to the exchange ... 50Hz rated voltage AC4-100V, rated current circuits 100,225 and below, the products are widely used in high ... security of electricity and prevent electrical fires.DYL1-100, 225 residual current monitoring electrical fire detector (hereinafter referred to ...