Yaan's YR5803 thermal imaging PTZ system features passive infrared (PIR) thermal technology; it is mainly for use in indoor environments, especially aphotic surroundings. In zero-lux conditions, it effectively detects objects. Thermal images are generated by detecting infrared thermal radicalization from objects. It has an eximious mechanical design and motion detection. Detection distance is up to 2.2 kilometers. Moreover, it offers energy savings with 1.5-watt consumption.