What is infra-red?
Infrared (IR) is invisible radiant energy, electromagnetic radiation with longer wavelengths than visible light. Human eyes only can see light with a wavelength between 320nm-760nm. Infrared, which spans 700nm to 1000nm on the EM spectrum, is beyond what the human eye can see
We use the Infrared tech to ensure the interior cam can record clear video even without light for nighttime recording.
so with the IR LED off during the day, the videos of the interior camera are colorful,(maybe a little pink or purple )
with the IR LED on during the night, the color will be black and white.
Below pic for your reference.