Don't you require smoke detectors in residential bedrooms to be on ark fault Breakers?
Smoke detectors and smoke alarms are two different items. "Smoke Alarms" typically of the single station 120v. variety require AFCI protection in bedrooms because they are a 120v. outlet. "Smoke Detectors" on the other hand are usually 12v. and part of a fire alarm system and do not require AFCI protection. Terminology is the difference.
[This message has been edited by George Little (edited 09-01-2006).]