The First Alert Combination Smoke and Carbon Monoxide Alarm detects two threats, smoke and carbon monoxide, in a single device. This 2-in-1 hardwired alarm has lights on the face of the alarm to let …

On a peaked, gabled, or cathedral ceiling, install the first Smoke/CO Alarm within 3 feet (0.9 meters) of the peak of the ceiling, measured horizontally. Additional Smoke/CO Alarms may be required …

Feb 7, 2025 · Using a 9-volt backup battery, the smoke and carbon monoxide detector can function even in the event of a power outage. Additionally, the Co smoke alarm features a single test and silence …

The SC9120B hardwire alarm comes with 2-in-1 protection to detect CO you can"t see, smell or taste in the air, as well as first signs of a potential fire. This alarm works exceptionally well by using ionization …

Jun 18, 2018 · Great for overhead drilling or hard-to-reach applications. Rigid shaft construction ensures straight, precise drilling. Black oxide coating resists corrosion.

Overall, the First Alert SC9120B is a reliable and efficient device that offers superior protection from both smoke and carbon monoxide. Its smart system feature, loud siren, and easy-to-use buttons make it …

The First Alert Combination Smoke and Carbon Monoxide Alarm detects two threats, smoke and carbon monoxide, in a single device. This 2-in-1 hardwired alarm has lights on the face of the alarm to let …

Get 2-pack First Alert SC9120B Smoke & Carbon Monoxide Detector with 120 Volt & 9 Volt Battery Back Up.

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The First Alert SC9120LBL hardwired smoke and carbon monoxide combination alarm with 10-year battery back-up features an ionization smoke sensing chamber and an electrochemical carbon …