BRK CO400B 9V Battery Carbon Monoxide Alarm

Keep people and property safe with the BRK Electronics CO400B Carbon Monoxide Alarm — a reliable, code-compliant solution for residential safety and portfolio-wide monitoring. The CO400B uses an electrochemical sensor, the most accurate sensing technology for CO detection, to deliver early, dependable alerts. Powered by a single 9V battery with a front-access compartment, the unit minimizes service time and helps maintenance teams manage devices efficiently. Built-in features like a one-button Test/Silence, dual silence modes (including an 8-hour low-battery mute), visible status indicators, and an end-of-life signal streamline operation and reduce nuisance maintenance. UL2034-listed and backed by a 5-year limited warranty, this wall-mount alarm is designed for installers, property managers, and security integrators who need consistent, low-maintenance protection. Ideal for residential units, multi-family dwellings, and as part of broader security and monitoring systems, the BRK CO400B supports compliance and occupant safety. Add the CO400B to your safety strategy today to improve on-site monitoring and reduce risk.

• Industry-leading electrochemical sensor for fast, accurate CO detection to protect occupants and reduce false alarms
• Front-access 9V battery compartment and single-button Test/Silence for quick maintenance and minimal downtime
• Dual silence options: temporarily mute nuisance alarms or silence low-battery chirps for up to 8 hours to avoid interruptions
• End-of-life signal notifies when alarm replacement is required, simplifying lifecycle management
• UL2034 listing and 5-year limited warranty provide code-compliant, reliable protection for residential properties and portfolio managers
• Low-profile wall-mount design integrates seamlessly into security and monitoring programs without impacting aesthetics