Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 119
The detecting area of a detector refers to the space divided and surrounded by columns with a net height of not less than 40cm or other similar constructions around the mounting surface of the detector. But for detectors of differential distributed and smoke-detecting types, the net height shall be increased to not less than 60cm.
中文原文 各類場所消防安全設備設置標準第119條
探測器之探測區域，指探測器裝置面之四周以淨高四十公分以上之樑或類似構造體區劃包圍者。
但差動式分布型及偵煙式探測器，其裝置面之四周淨高應為六十公分以上。
但差動式分布型及偵煙式探測器，其裝置面之四周淨高應為六十公分以上。