What is Perimbar Perimbar is specified throughout the world as the first choice for perimeter protection in a variety of commercial, governmental and domestic applications. It is an external infra-red beam detection system available in virtually any size with a range of up to 150 metres.   These curing of attractively landscaped or environmentally sensitive areas calls for an intruder detection system which is discreet, highly effective and free from false alarms.What's more, when it isn't aesthetically desirable or cost-effective to secure large expanses of open ground with either fencing or walls, Perimbar's advanced electronics can be tailored to provide the ideal solution.