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Kidde Firex Hardwired Inter-Connectable 120-Volt Auxiliary Heat Detector 135 Degree with Battery Backup 21029895 - The Home Depot
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Amazon.com: Fire-Lite H365 Intelligent Fixed Addressable Heat Detector, White, 2-Wire SLC Loop Connection, Built-in Tamper-Resistant Feature, Designed for Direct-Surface or & Junction Box Mounting : Tools & Home Improvement
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