This Kidde smoke alarm is a reliable and modern addition to any home security system. With a low profile design and flush mount installation, it is a sleek and unobtrusive addition to any room. This smoke alarm is powered by either batteries or a hardwired power source, and comes with a rechargeable battery and battery backup. The alarm is designed to detect smoke and has a gas type of smoke. It is a single unit and does not come with any custom bundles. The color of the alarm is white and it was manufactured in 2008. This smoke alarm is part of the Powerline/UPB smart home protocol and has a model number of KN-SMFM-I. It is a great choice for anyone looking for a high-quality smoke alarm.