I knew there would be a problem with calling it day/night mode and I'd get a response like yours. I'm not saying you're wrong and perhapes Hikvision cams are different than others and can't be controlled, but but all my other cam's can be which may call it IR mode or IR LED Control but is, and does, the same exact thing as the Hikvision day/night mode which is control the IR Cut Filter and LEDs (although only the IR cut filter is controlled on some of the less expensive cameras with control of the IR LEDs simply left up to the photocell at all times).