The 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.
North Metro Denver
Handle every detector in one visit.
Call or text Jayson to schedule residential smoke and CO detector service.
Call (303) 880-9881 jaysonsale@icloud.comFor an active alarm or suspected emergency, get outside and call 911.
Next steps
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