ABSTRACT
This chapter covers important terms/topics such as security systems, passive infrared and magnetic sensors, and domestic telephone system. It talks about aware of the operation and installation of simple security systems, and shows how to carry out simple additions to domestic telephone systems. There are two types of intruder alarm system available, the hard-wired system and the wireless variety. Clearly, the wireless appears attractive from an installation point of view, as there are no cables to be run. The hard-wired type is preferred as it is very reliable. The master socket is the first socket in any installation and contains components to allow telephones to be removed without causing problems at the exchange. Connection to the master socket is not permitted, except by use of an adaptor plug and extension cable. The connection to the modern insulation displacement connectors (IDCs) terminals is made using a special tool provided with each socket.
