Two very important devices should be in every home: smoke alarms and carbon monoxide alarms.
Smoke alarms play a vital role in reducing fire deaths and injuries — and because smoke spreads so fast, a smoke alarm will give you time to get out in the event of a fire. Smoke alarms are required in all sleeping rooms and on each floor level.
Carbon monoxide is a poisonous gas that is produced by the incomplete burning of fuels like wood, charcoal, kerosene, and natural gas.
Carbon monoxide alarms protect you from this gas that is colorless, odorless, and deadly. Carbon monoxide alarms are required on the lowest level of gas source; on each additional level of gas source; and within 15 feet all sleeping rooms.