What does "pan-tilt" refer to in CCTV technology?

In CCTV technology, "pan-tilt" refers to the capability of a camera to move both horizontally (pan) and vertically (tilt). This functionality allows for a broader surveillance area, as operators can adjust the camera's position to capture video from different angles without needing to physically relocate the device itself. This is particularly useful in monitoring larger spaces or following moving objects within the camera's view, enhancing the effectiveness of security systems.

The other options do not accurately describe the "pan-tilt" feature. Recording audio is unrelated to the camera's movement capabilities; integrating multiple cameras pertains more to system design rather than the specific functionality of a single camera; and while infrared functionality does offer advantages in low-light conditions, it does not relate to the movement capabilities described by "pan-tilt." Hence, the correct choice clearly highlights the essential movement features that are integral to certain CCTV configurations.