Ensure peace of mind with the Hispec Interconnectable Mains Smoke Detectors and Mains Heat Detector set. This pack includes four smoke detectors and one heat detector, all designed to provide early warning of potential hazards. The detectors are equipped with a battery backup feature, ensuring continuous monitoring even in the event of a power outage. Each device is powered either by a hardwired connection, with the convenience of a backup battery included. The sleek white design has a diameter of 12 cm. With this comprehensive set, you can implement a robust safety system in your home or workplace. Compliant to BS EN14604:2005.