First Alert CO250B, White, 9-Volt Battery, Electrochemical Carbon Monoxide Alarm

Secure your home or facility against the threat of carbon monoxide leaks with the BRK CO250B Carbon Monoxide Alarm. Designed for residential and institutional use, this carbon monoxide alarm uses an advanced electrochemical sensor to accurately detect elevated carbon monoxide levels. With an 85-decibel horn, the carbon monoxide detector helps ensure you have early warning of carbon monoxide presence. The included 9-volt carbon monoxide detector battery powers the alarm even in the event of a power outage, and the CO alarm will chirp about once a minute when the battery needs to be replaced. The CO monitor has two silence features: low battery silence that can silence the low-battery chirp for up to eight hours and alarm silence that can silence the carbon monoxide detector alarm for several minutes. Equipped with a tamper-resistant battery cover pin and a battery cover that resists closing when the battery is missing, the carbon monoxide detector can easily be kept in good working order.

First Alert CO250B, White, 9-Volt Battery, Electrochemical Carbon Monoxide Alarm

• Highly accurate electrochemical CO sensor for reliable detection of carbon monoxide
• Silence options allow temporary silencing of both the alarm and low-battery chirp
• Alarm cover locking pin helps prevent tampering and unauthorized battery removal
• Convenient end-of-life chirping signal alerts you when it's time to replace the unit
• Includes a 9-volt battery and all necessary mounting hardware for easy installation