First Alert CO400B Battery-Operated (9V) Carbon Monoxide Alarm

The CO400B is branded by BRK Electronics as First Alert®

The CO400B is a direct replacement for the BRK/First Alert BCD3BN

The CO400B is a battery operated carbon monoxide alarm designed for portability. No installation is required and can be mounted or placed almost anywhere.

Features

• Uses 9 volt battery (not included)
• Table top use or wall mount
• Permanent sensor
• Samples air once every second
• Calibrated at four levels for accuracy
• Test/silencer button realarms if levels persist
• Unique self testing system alerts if malfunctions
• 3 indicator lights green power status, yellow service, red warning
• 5 year limited warranty
• Meets New York, Massachusetts, & Oregon Carbon Monoxide Regulations.