
DC3V Battery Independent Smoke Sensing Alarm Detector Standalone Fire Alarm System. High Sensitivity Detection: Utilizes proprietary chips and photoelectric sensing components for reliable fire detection. Audible and Visual Alarm: Emits 80 dB sound at 3 meters distance with visual alert for immediate awareness. Easy Ceiling Installation: Simple mounting design with included expansion tubes and self-tapping screws. Long Battery Life: Powered by 2 DC 3V No. 5 mercury-free batteries with low voltage alarm. Wide Operating Temperature: Functions effectively in temperatures ranging from -10 to +50 degrees Celsius. Low Energy Consumption: Work current is less than 10uA ensuring extended battery performance. Durable Fire-Proof Material: Constructed with fire-proof plastic for safety and long-term durability. Versatile Application: Suitable for schools, factories, shopping malls, warehouses, and homes.