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Key Features: • Combined Photoelectric and Thermal Sensing: Detects both smoke and heat, providing a more comprehensive approach to fire detection. System Sensor 4WITAR-B Detector Combo PE/Heat Plug-In 4 Wire 12V/24VDC.
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.