AC 220V With 9V Backup Battery (SD-424S) Standalone Smoke Detector

The SD-424S Standalone Smoke Detector is a dual-powered device operating on AC 220V with a 9V backup battery to ensure continuous protection during power failures. It is designed for efficiency, with a standby current of less than 7μA in DC mode and less than 30mA in AC mode. In the event of smoke detection, the device consumes less than 45mA, triggering an audible alarm louder than 85dB(A) at a distance of 3 meters, accompanied by a red indicator light for visual notification. The SD-424S offers a smoke sensitivity range of 0.08-0.16 dB/m, making it highly responsive to potential fire hazards. The unit functions optimally in temperatures between 0℃ and +50℃. Certified with the CE mark and compliant with EN14604:2005/AC:2008 standards, this smoke detector ensures safety and reliability in both residential and commercial settings. Its compact dimensions of 142mm in diameter and 40.5mm in height make it easy to install and discreet.