Save 62% off the  First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup! This is obviously a must-have for any home, and at this price you can stock your home with several. Click here to get it for only $17.99.

• Keep your family safe with this easy-to-use plug-in carbon monoxide alarm; it works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there’s a power failure
• Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
• Simple to use, with a single test/silence button; a loud 85-decibel alarm sounds when Carbon Monoxide levels reach dangerous levels
• To ensure complete protection make sure to place one on each level of your home and in each bedroom
• 7-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety
• All First Alert CO alarms are rigorously tested to meet UL standards. Item Length is 3.4 inch , Item Width is 1.38 inch and Item Height is 5 inch

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