تماشای ویدئو How to install a smoke alarm از آی-ویدئو
In this clip we show you how to install smoke alarms and where they need to be located in your home.
Getting Firewise - Making fire-safety easy
#1 What smoke alarm is best?
http://youtu.be/YzPwCjFgLYM?list=PLUiaMtB53eWPuvZK2M6F3UeCFh8rLX-R0