The filters on the monitor are 650,850,940. What do they do respectively? What's the difference?
24 hours of uninterrupted monitoring can be achieved in places that need to be monitored, not limited by external sources. The complete darkness of the place can also be seen
940 is invisible infrared light, infrared filter cooperate with infrared light
This is the infrared filter, the number is the wavelength, the longer the wavelength, the less visible the eye, 650 is the red light visible part + the infrared part
