The Function for the Intelligent IR could be Meant Many Things, Different Supplier Different Meanings. It Is Not A Standard. For Our Camera DM461, the Intelligent IR is meaning that, when Motion Detection (Someone Passing by) in the Night, the IR LED will switch Into the WHITE LIGHT LED. IR is the Invisible Light by Human Eyes, and WHITE Light is Visible. The Advantage for Switching into the WHITE light is for making the Night Video Back into the COLOR Mode. With IR, the Night Video is Always in Black and White.