BRK First Alert SMI100-AC Smoke Alarm

No, the SMI100-AC is strictly a smoke alarm. It does not have sensors for carbon monoxide, so you will need separate detectors for CO protection.

Yes, this unit supports hardwired interconnection with up to 12 other compatible BRK or First Alert detectors. When one unit detects smoke, the entire system will sound, providing a comprehensive alert throughout your home.

This model uses advanced photoelectric sensing technology specifically designed to reduce nuisance alarms caused by common cooking smoke. While it is much less sensitive to kitchen steam and cooking particles than older models, it is still recommended to install it at least 10 feet away from cooking appliances.

The unit includes a 9V battery backup, ensuring the alarm remains fully operational during power outages. It is important to replace this battery annually to maintain reliable protection.

The SMI100-AC features an end-of-life indicator that will alert you when the sensor has reached the end of its service life. You should replace the entire unit according to the manufacturer's guidelines, typically every 10 years.

Installation is straightforward thanks to the included quick-connect plug system. If your existing wiring is compatible, you can often snap the new unit into place without needing to rewire your ceiling or wall.