Обязательно нужен специальный прибор который у наs называется смок аларм или файр аларм. Сигнализация специальная. Говорят она спасает жизни. According to estimates by the National Fire Protection Association and the U.S. Fire Administration, U.S. home usage of smoke alarms rose from less than 10% in 1975 to at least 95% in 2000, while the number of home fire deaths was cut nearly in half. Thus the home smoke alarm is credited as the greatest success story in fire safety in the last part of the 20th  century, because it alone represented a highly effective fire safety technology with leverage on most of the fire death problem that went from only token usage to nearly universal usage in a remarkably short time.http://freakonomics.com/2012/02/06/how-many-lives-do-smoke-alarms-really-save/