In our daily life, security always an important part for home, workplace and other different environments, it can protect our safety and provide the main evidence for many cases.Now, most CCTV cameras only have the video but not sound surveillance cause many times security system can’t provide key details. So audio surveillance products start became the indispensable device in different environments that’s why we committed to development and research the audio area for many years, we already can provide the great audio surveillance products for your requirements.