Kidde 10sc0 smoke co combinaton alarm kidde 10sc0 this smoke alarm from kidde is a battery powered combination alarm offering protection from smoke and carbon monoxide co in a single unit making it ideal for living areas it can also be installed on a wall or ceiling and is perfect for use where space is limited p p this unit is equipped with a host of features including a voice alarm which audibly announces danger when it has been detected there is also an alarm with peak level memor