How can a home camera mute?

Not all cameras have recording function. You need to confirm whether your surveillance camera has this function first, and make sure that your hard disk video recorder and other devices support sound output.

Regular surveillance cameras generally have no audio, while digital cameras (video recorders can choose audio according to users' needs) only provide audio input and output interfaces. If you want to use pickup equipment. If you want to hear the sound in the monitoring center, you have to install audio and other equipment on the video recorder to hear the sound.