The difference between single light source and dual light source

It mainly depends on the number and purpose of light sources used. Single light source smoke detectors have only one light source and use scattered light sources. They are suitable for common indoor places and daily use. The dual-light source smoke detector uses two different light sources, namely scattered light and concentrated light. It is mainly used in places that require higher precision and are difficult to detect, such as chemical laboratories, stage lighting, etc. In terms of shadow areas, a single lamp illuminates a larger shadow area, while dual lamps or multiple lamps illuminate areas that need to eliminate shadows. In addition, LED flash is a way to enhance exposure, especially in dark places. Using flash can help make the scene brighter. In general, single light source and dual light source each have their own characteristics and applicable scenarios, and the specific choice depends on the actual needs and use environment.