This Published Document describes a scheme which enables I&HASs
to be installed and maintained in accordance with published British
and European standards, Technical Specifications and Drafts for
Development.
The scheme described in this PD applies to IASs, HASs and I&HASs, with
wired interconnections and/or wire-free interconnections. However, the
scheme does not apply to exterior IASs which are installed in accordance
with BS 4737-4.3, nor does it apply to portable hold-up devices which
report directly to a monitoring centre.
This Published Document is intended to be applied in conjunction
with the standards and documents listed in Clause 3.