Yes, you can purchase a security system with audio recording capabilities in addition to video recording capabilities. However, most of the older CCTV cameras you see don't have an audio feature built into the camera itself, as would be the case with newer cameras. Most home security cameras have the ability to record sound with built-in microphones that can pick up sounds within the monitoring area. It is also possible to connect an external microphone with certain models.
Home security cameras are a popular option to include as part of a smart home, especially when you have a lot of other smart devices that you want to be able to keep a close eye on. Although a home security camera can support sound recording, it may not have a built-in microphone for recording. Older security cameras that include audio recording features usually have an additional microphone to capture sound. Unidirectional security cameras with audio recording can capture important voice data on tape to increase your surveillance capabilities.
The powerful video analysis of today's modern IP cameras can detect and identify sounds even when a camera is pointing in a different direction. For example, small business owners often place a sign indicating the use of retail security cameras. If you have access to look at the camera up close, be aware of a very small hole located in the camera's lens housing. Many home security cameras have two-way audio, which can be a useful deterrent to catching someone in the act trying to break into your property.
But there are also legal ramifications for recording with a security camera system with audio recording functions. If you already have a security camera that supports audio recording but doesn't have a built-in microphone, you can get external microphone kits, but it can be difficult to set up and install them. It's incredibly difficult to tell just by looking at a security camera if you can record sound, but there are several ways to find out. To help you know if it's illegal to have security cameras with sound in your location, here are some factors to check.
In places like California, Connecticut, Delaware, Florida, Hawaii, Illinois, Kansas, Maryland, Massachusetts, Michigan, Montana, Nevada, New Hampshire, Pennsylvania, Utah and Washington, the consent of all parties is required before security cameras can legally record sound. Only the high-end cameras that are part of a complete home security system are the ones that don't.