Dates from analogue era
The analogue ones in the late 1970s didn't work well with Image Intensifiers as they are noisy, so cameras with motion detection in the dark used a pair of IR flood lamps. Actually a pair of 200W heat lamps with black filters. Then later CCD replaced tube cameras and IR LEDs replaced the filtered heat lamps.
There must be more to this than suggested in the article. But the word "smart" on a product or project is meaningless.
Biting the hand that feeds IT
