Passive Infra Red Detectors (PIRs) activate the Response Wired Alarm System when an intruder is detected in the protected area. PIRs are easy to fit and extend your security coverage to include additional rooms and outbuildings. FEATURES: Up to 14 metres PIR coverage, Automatically detects an intruder when the Alarm is set, Test mode for easy setup, Red LED Movement Indicator, Built in tamper protection, Add as many PIR Sensors as required to your Wired Alarm System. IDEAL FOR: Use throughout the home and outbuildings. WHAT'S IN THE BOX: 3 x PIR Detector, Installation and Operation Instructions.