Hello Tim! Eve Cam features a dedicated infrared motion sensor to trigger motion alerts, automations and recordings. If you have configured people / pet / vehicle recognition, any motion detected by the infrared motion sensor will cause the video footage to be sent to your Apple TV or HomePod to intelligently determine whether your recording criteria is met.
Please note that while the infrared motion sensor can "see" in the dark, it can't see through glass. So if there's a glass door to your front porch or there's a window looking out to your patio or yard, Eve Cam won't detect any motion behind it and thus also not trigger notifications, automations or recordings.
Best regards, Volker
Aug 8, 2021