Is an external sounder (siren/strobe light) required with when a system has a built in internal siren?
Not necessary, but the decision is that of a prospective alarm installer whether to add an external sounder. Some people prefer an alarm system including external Siren/Strobe light as one of its accessories. An external sounder is considered as a visible deterrent. There are those who want a visible deterrent as part of their alarm system but would contend with a dummy siren/strobe light or a sign posted label alerting people a property is alarm protected. There is another group who prefers an unexposed alarm system whose judgement is influenced by a feeling that intruders caught unawares are disorientated, panic stricken and their first instinct is to try getting away. Those with a preference for unexposed alarm also feel an exposed alarm is suggestive of having valuables in a property. Whatever your preference, De Alarm offers a multitude of choices. The most important thing is having in place an effective burglar alarm offering a choice of expanding the accessories at a user’s budg
