First Alert 1039879 Smoke (SA303) & Carbon Monoxide (CO400) Detector Combo Pack

First Alert 1039879 Smoke (SA303) & Carbon Monoxide (CO400) Detector Combo Pack

  • $44.75
    Unit price per 



• Model number SCO403;
• Bundles together a smoke alarm & carbon monoxide detector;
• Ionization smoke sensor reliably detects smoke from fast-flaming fires;
• Electrochemical sensor accurately detects carbon monoxide;
• Battery-operated alarms install easily without the aid of an electrician;
• Loud 85dB alarms;
• SA303 has 10-year limited warranty & CO400 has 5-year limited warranty;
• Includes 2 9V batteries & mounting bracket;