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Gentex Hardwired Interconnected Photoelectric Smoke Alarm Detector with Dualink, Battery Backup and Relay Contacts S1209F - The Home Depot
Gentex Hardwired Interconnected Photoelectric Smoke Alarm Detector with Dualink, Battery Backup and Relay Contacts S1209F - The Home Depot
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System Sensor B224RB-IV Intelligent Relay Detector Base - Amazon.com
Optical Smoke Detector ES Detect with relay contact, 48 V DC operation
