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10-Year Sealed Battery Smoke Detector with Intelligent Wire-Free Voice Interconnect (2-pack)

Hardwired Interconnected Photoelectric Smoke Alarm with Dualink, Battery Backup and Relay Contacts

Hardwired Interconnected Photoelectric Smoke Alarm, Ceiling Mount, ADA Strobe with Battery Backup

Hardwire Smoke Detector with 10-Year Battery Backup and Intelligent Wire-Free Voice Interconnect

Battery Operated Photoelectric Smoke Alarm

Hardwired 2-in-1 LED Strobe and Smoke Detector with 10-Year Battery Back-Up