Firehawk FHN250BB Mains Powered Optical Multi-Criteria-Enhanced Smoke Alarm with Alkaline Battery Backup - these FHN series alarms are NOT compatible with the older FH models
Firehawk FHN250BB Mains Powered Optical Multi-Criteria-Enhanced Smoke Alarm with Alkaline Battery Backup - these FHN series alarms are NOT compatible with the older FH models