First Alert Combination Smoke & Carbon Monoxide Alarm SMICO100 — Battery-Powered with Precision Detection and End-of-Life Alert

The First Alert Battery Combination Smoke & Carbon Monoxide Alarm (SMICO100) is a 2-in-1, battery-powered detector that uses Precision Detection sensing to warn you of both smoke and carbon monoxide.

Combining smoke and carbon monoxide detection into a single, compact unit, the SMICO100 is designed for straightforward installation and low maintenance. It meets updated industry sensing standards, helps reduce false alarms from everyday cooking, and includes end-of-life alerts so you know when replacement is needed. The unit relies on user-replaceable batteries and offers a test/silence button for quick checks and temporary hush during nuisance alerts.

How does this alarm reduce false alarms from cooking?

The SMICO100 uses First Alert's Precision Detection advanced sensing technology, which distinguishes routine cooking smoke from developing fires more accurately than basic photoelectric sensors. That reduces unnecessary wake-ups while still providing early warning when smoke levels indicate a real emergency.

• Precision sensing tuned to industry standards to limit nuisance activations
• Balanced detection logic to avoid over-reacting to brief cooking smoke
• Test/silence button to temporarily hush non-hazardous alerts

What protection does it offer against carbon monoxide?

This combination alarm continuously monitors air for carbon monoxide and sounds the alarm if CO reaches harmful levels. Because it integrates both functions in one housing, you save wall and ceiling space and keep monitoring centralized for faster recognition of either threat.

• Dual-function sensing for smoke and CO in a single device
• Continuous CO monitoring with audible alarm response
• Battery operation allows placement where hardwiring isn’t available

How easy is it to install and maintain the SMICO100?

As a battery-operated unit, the SMICO100 installs without wiring—mount the bracket, attach the detector, insert batteries, and it’s ready. Routine maintenance is simple: monthly testing, occasional battery replacement, and paying attention to the end-of-life warning so you can swap the unit when required.

• Battery-powered for quick, tool-minimal installation
• Large test/silence button for regular checks and temporary hush
• End-of-life alert signals when the device should be replaced

What features help me know the alarm is working and when to replace it?

The SMICO100 includes a prominent test/silence button for confirming functionality on demand and a built-in end-of-life warning that notifies you when the detector has reached the end of its serviceable life. These indicators make it easier to maintain a reliable detection system without guesswork.

• Test/silence button for quick operational verification
• End-of-life warning to indicate replacement time
• Battery operation gives visible and audible cues when power is low

Who is this for: The First Alert SMICO100 is a practical choice for homeowners, renters, and landlords who want dependable smoke and carbon monoxide protection without hardwired installation. It’s especially well suited for kitchens, apartments, finished basements, and any location where a combined, low-maintenance detector is preferred. If you need a straightforward, standards-compliant 2-in-1 alarm with nuisance-reduction features and clear maintenance signals, the SMICO100 is designed to fit those needs.