The point-type infrared flame detector consists of one infrared sensors and optical filters. The main sensor generates CO from the combustion of hydrocarbons, the emission spectrum (4.4 microns) has the highest sensitivity. Combined with the logical comprehensive judgment of flicker frequency of fire, it has higher immunity to the false alarm caused by the ambient infrared light source.Because the daylight source is more complex, and the detector only USES a single wavelength infrared sensor for flame detection, so the product should be used in the indoor working environment.The detector is suitable for liquid and gas fires, open fires that produce smoke and places that produce deflagration.