The FireAngel MULTI-SENSOR SMOKE ALARM ST-622T x 2 is a white smoke detector with a 10-year battery life. It is compatible with Samsung SmartThings for smart home integration and features a 90 dB operating sound rating. Manufactured in the United Kingdom by FireAngel, this unit includes two smoke alarms with batteries already included, providing reliable protection for your home. With a manufacturer warranty of 10 years and smart home protocol of Powerline/UPB, this smoke alarm offers peace of mind and safety for your household.