For the nominal price of these safety detector alarms, you can literally save your family's lives! These are great COMBINATION Smoke & Carbon Monoxide Alarms so there's no need to have 2 separate units. According to the National Fire Protection Association, "Install smoke alarms inside each bedroom, outside each sleeping area and on every level of the home, … [Read more...] about Top 5 Best Selling Smoke & Carbon Monoxide Detector Alarms