Is your home kitted out with a carbon monoxide detector? Update your security essentials and keep your home safe with a new carbon monoxide alarm. For peace of mind, choose smart alarms that alert your phone and tell you where the danger is in case you're away from home. These alarms give you information on more than just carbon monoxide detection, with multipurpose features including temperature and humidity sensors. Stock up on batteries too, to make sure you're never out of power.