First Alert SMI100-AC Smoke Alarm

No, this specific model is a dedicated smoke alarm. It uses ionization technology to detect fast-flaming fires but does not have sensors for carbon monoxide.

Yes, this unit is designed to interconnect with other compatible First Alert or BRK smoke, CO, and heat alarms. You can link up to 18 units total, with a maximum of 12 smoke alarms in the chain.

You are still protected. While this unit is hardwired into your home's electrical system, it includes a 9V battery backup that ensures the alarm remains functional during a power outage.

This model features a latching alarm indicator. If multiple units go off, the unit that originally detected the smoke will have a green LED that flashes in a specific pattern (2 seconds on, 2 seconds off) so you can identify the source.

It is designed to be straightforward. The unit comes with a 'Perfect Mount' bracket that simplifies the installation process, though because it is a hardwired device, you should be comfortable working with electrical wiring or consult a professional.

You can use the integrated test and silence button on the front of the unit. Pressing this button will silence the alarm temporarily, which is useful for clearing nuisance alarms caused by cooking or steam.