Battery-powered Electrochemical Carbon Monoxide Detector

Introducing the First Alert CO400 Battery Operated 9V Electrochemical Carbon Monoxide Alarm — a compact safety device designed to protect your home. Running on a standard 9V battery, this 2-pack stays active during power outages, ensuring continuous CO monitoring when you need it most. Its electrochemical sensor delivers accurate detection, and when CO levels rise, a sharp 85-decibel alarm sounds to wake everyone nearby. With its lightweight silhouette, it fits neatly on walls or shelves, providing dependable protection without clutter.

Benefits Paragraph: Keeping your family safe is simpler thanks to intuitive indicators. A visible low-battery alert gives you early warning before power fails, while an end-of-life timer signals when to replace the unit. Each detector is designed for about five years of service, delivering long-term protection with minimal upkeep.

• Battery-powered CO detector: Operates on a standard 9V battery for reliable protection during outages and a 2-pack for flexible placement around your home.
• 85 dB CO alarm: A loud carbon monoxide warning ensures fast awareness and quick action in any room.
• Status indicators: Low-battery indicator and end-of-life alert keep you informed so maintenance is never missed.
• One-button test and mute: Simple, intuitive controls make safety checks effortless and alarms easy to silence when needed.
• Long sensor life: Each unit offers roughly five years of dependable CO detection, reducing replacement frequency.

Why this CO detector stands out: Designed for dependable, no-fuss protection, the CO400 delivers accurate sensing and clear alerts without complicated setup. The battery-operated design guarantees monitoring during power outages, and the included 2-pack provides flexible coverage for bedrooms, living areas, and kitchens. With a five-year service life and straightforward maintenance, it's a practical choice for ongoing home safety. Invest in proactive protection for your family today.