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A Quad P.I.R is very much like the standard P.I.R but uses two circuits instead of one (each circuit is ‘Dual Element’, hence ‘Quad’). These types of detector are far more resistant to causes of false alarms e.g. draughts, small animals and insects etc. These detectors look similar to a P.I.R. Mac Security installs Quad P.I.R’s as standard.
