photoelectric smoke alarm smoke co detector fire and carbon monoxide detector

This product SR-821THS-Y is an intelligent carbon monoxide smoke composite detector, which adopts micro-processing control and electrochemical sensor, featuring high stability, low power consumption and small sensitivity drift. It is mainly used in places where carbon monoxide gas leakage and fire may occur, ensuring personal life safety. More details；https://www.firealarmfactory.com/smoke-co-detector.html