Planning, equipment and installation of intruder alarm systems in situations where the balance of the system is located externally to any premises. The recommendations cover all systems from basic to the most complex.Cross References:BS 1722:Part 10BS 4737:Part 1BS 4737:Section 3.30BS 4737:Section 4.1BS 4737:Section 5.2BS 5490BS 5979BS 6799