The Aico Ei3016 Mains Powered Optical Smoke Alarm is a reliable and essential home safety device. This smoke alarm is hardwired for constant power with a battery backup feature, ensuring uninterrupted protection in case of a power outage. With a sleek white design and compact dimensions of 6.2cm depth and 15.5cm width, this Aico smoke alarm is a subtle yet important addition to any household. The alarm is powered by mains and has a battery backup, providing peace of mind knowing your home is safeguarded against potential fires. AudioLINK Data, and SmartLINK Compatible