DD 231:1996
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Code of practice for exterior deterrent systems
Hardcopy , PDF
01-01-2002
English
15-11-1996
Gives instructions for planning and installing security systems giving two levels of alert, forewarning followed by full warning.
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