Yes, in one handy unit by Kidde, you have both a smoke alarm and a carbon monoxide
alarm! A carbon monoxide detector is essential in all homes with gas logs or gas or oil furnaces because carbon monoxide is odorless and colorless as well as being one of the leading causes of
poisoning in America. This nifty dual alarm emits a warning for both smoke and carbon monoxide, so you no longer need two separate units. Three AAA batteries included with the Carbon Monoxide and
Smoke Alarm Combination by Kidde.