The 3-In-1 Explosive Gas & Carbon Monoxide Alarm from First Alert® warns against natural/methane, propane, and carbon monoxide. The digital display makes for easy reading during an alarm or when any button is pressed. The alarm plugs into any standard outlet with no additional mounting necessary and comes with a line cord, which offers multiple placement options. The alarm also comes with a battery backup in the case of a power outage and utilizes an electrochemical carbon monoxide sensor for increased accuracy. Meets UL standards.

• 3-way protection against natural/methane gas, propane & CO
• Backlit digital display
• 120V AC plug-in with battery backup
• 9V battery

3-way protection against natural/methane gas, propane & COFIRST ALERT