"Most deaf people are fully capable of self-preservation from fires if they are informed of the danger."

• B. Levin and H. Nelson - "Firesafety and Disabled Persons", NFPA Journal v. 75, No.5 (1981).

Alerting to an emergency device is most difficult when an individual must arouse from sleep.

• Nearly 50% of all home fire fatalities occur between the hours of 11:00pm and 6:00 am.