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System Sensor COSMO-2W Best-in-class 2-Wire carbon monoxide (CO) and smoke detection technology in a single, system-connected device. Requires interface module COSMOD2W. 12/ 24 V
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SYSTEM SENSOR CO1224T 12/24 volt, 4-wire, system-monitored C02 carbon monoxide detector w/ RealTest Technology: Amazon.com: Tools & Home Improvement
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System Sensor Carbon Monoxide Detector CO1224TR with RealTest 12/24 VDC: Smoke Detectors: Amazon.com: Tools & Home Improvement
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SYSTEM SENSOR CO1224T 12/24 volt, 4-wire, system-monitored C02 carbon monoxide detector w/ RealTest Technology: Amazon.com: Tools & Home Improvement
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