Each camera is checked every 6 minutes, and even more often if motion detection is working. Night checks use the cameras’ infrared vision, so a dark room is still a checked room.
AI Level 1 checks every 12 minutes.
AI Level 2 also checks every 12 minutes, halfway between Level 1’s checks.
When a camera senses motion, extra checks happen as long as motion continues — in this example there was motion 20 minutes into the hour, and again 50 minutes into the hour.
If a camera is too far away to sense motion, or if motion detection is turned off in your Ring app, then the motion-activated camera checks (orange) will not happen, but the clockwork camera checks keep happening (blue & purple).