DIThe published combination replacement
First Alert SMICO105-AC Combo Alarm Service
The SMICO105-AC combines smoke and carbon monoxide detection in a hardwired, interconnect-capable unit with a sealed 10-year backup.
What the manufacturer lists
First Alert lists smoke and electrochemical CO sensing, hardwire interconnect, a test/silence button, end-of-life warning and a 10-year backup battery. Product instructions and compatibility information remain the controlling source.
Published installed price
Detector Inspectors’ published price is $85 per hardwired smoke-and-CO combination detector, including the specified unit, parts and labor.
Placement still comes first
A combination alarm must be located where it can serve both smoke and CO warning needs. Existing wiring alone does not determine proper placement; manufacturer instructions and local requirements matter.
Safety references
Primary sources used for this page:
Manufacturer instructions and current local requirements control. For an emergency, call 911.