The First Alert BRK SMICO100-AC combination alarm provides dual protection against smoke and carbon monoxide hazards. This hardwired unit features ionization smoke detection and electrochemical CO sensing, with 9V battery backup for protection during power outages.

• Dual ionization smoke and electrochemical CO sensors
• Hardwired with 9V battery backup
• 85 dB alarm at 10 feet
• Interconnects with up to 12 smoke alarms and 6 CO/heat alarms
• Latching indicator identifies which alarm triggered
• Easy adapter plug for quick installation
• Test/silence button for convenient operation
• UL 217 8th Edition and UL 2034 certified

Note: Includes 9V battery and dust cover. 10-year limited warranty. Replaces SC9120B models.