The Aico EI603RF RadioLink+ Heat Alarm in white is a reliable and efficient safety device for your home. With a single battery power source and backup battery feature, this alarm is designed to keep you protected in case of a fire. The compact design of 11.5cm in depth and weighing only 200g makes it easy to install and virtually unobtrusive in your home. Trust the Aico brand for quality and peace of mind. Expiry date October 2032