This STATUS Photoelectric Smoke Alarm is a reliable and easy-to-instal device that will keep your home safe from smoke damage. With a powerful 85dB operating sound rating, this alarm can be heard clearly from a distance of 100m. It features a photoelectric smoke sensor and battery backup, ensuring that it will function properly even during power outages. The alarm is manufactured by Ei Electronics and operates on a 9V power source. It has a white colour and a diameter of 10cm, making it a stylish addition to any home décor. The item weighs 200g and has a depth of 3cm. It comes with one battery, which is included in the package.