First Alert BRK SC-9120B Hardwire Combination Smoke/Carbon Monoxide Alarm Review

On our list is an equally worthy product that provides all the “bells and whistles” that one would expect out of a smoke alarm. The First Alert BRK SC-9120B Hardwire Combination Smoke/Carbon Monoxide Alarm provides warning for carbon monoxide and fire. It is sleek in design and small in construction, so you can count on setting it up anywhere.

This inexpensive piece of equipment detects two hazards at once, protecting your family from carbon monoxide, which is an odorless deadly gas that is often referred to as a silent killer. This gas can be emitted by sources including water heaters, fireplaces, oil furnaces, charcoal grills, etc. In the case of fire, the alarm warns you even before it becomes visible.

The product comes with a quick plug in power connector that doesn’t require installation and is compatible with 18 devices to give you maximum protection. The product comes with single test/silent button that automatically detects nonthreatening alarms and low battery warning for maximum efficiency. This model can also run during periods of power outage.


  • Easy to install; offers seven-year limited warranty
  • Capability to detect both carbon monoxide and fire
  • Easy to use controls and highly responsive alarm indicators


  • Not suitable to be placed near the kitchen

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