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Select different alarm probes according to the place and area to be protected. Here are the working principles of several different detectors. Infrared detector: any object will radiate infrared light of varying intensity due to different surface heat. Due to different objects, the wavelength of infrared radiation varies. Infrared detection is mainly used to detect the movement of human body and other invasions
Published on: January 5, 2019 Number of hits: 177
