This product is a Photoelectronic Smoke and Heat Detector. With a unique structure design and an intelligent MCU to process photoelectronic signals, it is provided with dust-proof, mothproof and anti-light interference etc. functions, ensuring the detector stability from design basis. It reacts very quick to visible smoke released by smoldering fire and flaming fire. It has Photoelectronic smoke sensor and heat sensor inside,the detector will alarm when the temperature up to alarm temperature or the smoke reach the alarm level. It’s suitable for fire alarm in houses, factories, shopping malls, hotels, restaurants, office buildings, teaching buildings, banks, libraries, Warehouses, etc..