IEC 62642-2-73 Ed. 1.0 b:2015

IEC 62642-2-73:2015 defines active surface mounted glass break detectors installed in buildings and provides for security grades 1 to 4 (see IEC 62642-1), specific or non-specific wired or wire-free detectors, and uses environmental classes I to IV (see IEC 62599-1).