Follow the alarm’s installation instructions and local codes, placing alarms near sleeping areas and on each level where occupants can hear alerts. For system-connected wireless carbon monoxide alarms, check communication with the panel at each location, and avoid drafts, vents, and areas near fuel-burning appliances unless the instructions specify otherwise.

A wireless carbon monoxide alarm detects carbon monoxide and sends an alert through a compatible wireless system. A combination smoke, heat, and carbon monoxide alarm adds smoke and heat detection in the same device, which can reduce the number of separate detectors needed.

Wireless carbon monoxide alarms may use batteries to power both the sensor and wireless communication, so check each alarm’s specified battery type, quantity, and replacement interval. Also confirm whether it requires a compatible alarm panel and whether batteries are included or need to be purchased separately.

When comparing wireless carbon monoxide alarms, check that each alarm’s wireless technology works with the security panel, and review its power source, sensor type, and alert or indicator features. Also consider whether a carbon monoxide-only detector or a combination unit that also detects smoke or heat better fits the space and the system design.