The DSC FSA-410B Wired Photoelectric Smoke Detector is a reliable and efficient home safety device that operates on a 12V power source. With a sleek white design and wall-mounted feature, this smoke detector from DSC is easy to install and maintain. The local test button allows for easy testing of the unit, ensuring its functionality at all times. Ideal for indoor use, this smoke detector emits an 85 dB operating sound rating, providing a clear and effective warning signal in case of emergencies. Fast and free shipping ensures that you can have this essential device installed in your home quickly and effortlessly.