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2, When the door sensors, PIR motion sensor, Curtain detectors or other sensors be triggered, this siren will sound to deter thieves. 2 x PIR Detector. How does this siren alarm system protect your house?.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.