Security systems and home automation systems which have built-in approved security controllers.However, it doesn’t make any difference which type of system one is installing, alarm wiring will always be an integral part of an overall installation. Installers will consistently say that the wiring they use is a 22-AWG wire. And further, they will add it should be a 1 pair-conductor cable. In addition, any installer worth his salt will insist on stranded cable as opposed to 22-gauge stranded wire. Stranded 22AWG wire.