The Aico Ei3016 Mains Powered Optical Smoke Alarm is a reliable and essential home security device that offers peace of mind against potential fires. With a lithium battery backup and a manufacturer warranty of 1 month, this smoke alarm is designed to last until March 2037. Manufactured in the United Kingdom, this white-coloured unit is easy to install and operates with a 90 dB operating sound rating, ensuring that you will be alerted in case of any emergencies. The Aico brand is known for its quality and durability, making this smoke alarm a trustworthy choice for protecting your home.