Smoke alarms for people who are deaf or hard of hearing
However, people who are deaf or hard of hearing may not be able to depend on the traditional smoke alarm to alert them to a fire. fire conditions so they can escape. These accessories produce a loud, mixed low pitch sound. They are activated by the sound of the smoke alarm and are usually installed next to the bed.
BRK/ First Alert, Gentex and Kidde are brands of this type of smoke alarm.