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Kidde 20SA10 10-Year Hardwired Smoke Detector with Interconnected Alarm and LED Warning Lights (Upgraded to SMAC10YFEX)

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Firex SMACFEX-VRF AC Hardwired Wire-Free Interconnect Photoelectric Smoke Alarm with Voice Alerts with 2 AA Backup Batteries

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Kidde RGCUAR-RW Ring Smart Smoke + CO Alarm, Hardwired with 2 AA Backup Battery