The Kidde Essential Smoke and Carbon Monoxide Alarm Pack is a convenient solution for detecting fire and carbon monoxide gases in your home. The pack includes a smoke alarm and a carbon monoxide alarm, both of which are battery operated and easy to install. They can be mounted to a wall or placed on a table top or shelf for added convenience. The alarms come with a test button to check their functionality and power, and both feature warning signals when batteries need replacing. The carbon monoxide alarm also has an end-of-life signal that alerts you when it's time to replace the alarm after seven years of protection. This pack is ideal for use in all areas of your home, including kitchens, and is also suitable for use in rented accommodation, caravans, or on a boat.