In short, the answer is yes, CCTV camera systems are designed to record audio in conjunction with images. However, whether or not an employer or a retail location is allowed to record audio is another matter entirely.

Does all CCTV have audio?

Are CCTV Cameras Capable of Recording Sound – Yes

Your CCTV system is fully capable of recording sound. Most cameras are either equipped with microphones or have an input for an external mic. For commercial cameras, it's typically the latter. Many CCTV microphones can record quality audio up to six metres away.

Can we hear voice in CCTV?

According to the privacy laws in most states, CCTV cameras cannot record sound unless you obtain the consent of at least one party involved in the conversation.