The FireAngel ST-622 is an optical smoke detector designed to provide early warning of smoke development, thereby enhancing safety in living spaces. With an acoustic alarm signal of 85 decibels, it reliably alerts users upon smoke detection. The detector is powered by batteries, allowing for flexible installation without the need for a fixed power source. Weighing 155 grams and with compact dimensions of 130 mm in width and height, it is unobtrusive and easily integrates into various environments. The housing is made of robust ABS material, ensuring durability and reliability. It operates at a voltage of 3 volts, which ensures efficient energy use. The FireAngel ST-622 is a sensible investment in fire protection and helps create a safe living environment.