Supply kinds of cctv microphone

Your ideal audio surveillance supplier - Sizheng over 10 years in supplying in audio monitoring devices, microphones and smart home switches. Our products mainly include CCTV microphone, video conference microphone and voice recognition switch. Choose Sizheng, we will do our satisfactory for your profitable business.

About Us

Guangzhou Sizheng Electronic Technology Co.,LTD., founded in 2010, and be the audio frequency solution provider of Chinese industry-leading at present, selling different audio surveillance for CCTV cameras and related products. As a domestic real audio scheme developer, Sizheng is committed to provide users with the most conforms to the actual demand plan and products. At present, Sizheng products and solutions have been used by more than 6000 companies in China and abroad.

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Achievement of customer

Customer satisfaction is our unchanging primary pursuit

Entrepreneurial innovation

We understand and grasp the changes of social needs in a timely manner, and promote their realization quickly and efficiently

The good faith integrity

We uphold sincerity, credibility and a high sense of responsibility, both internally and externally

Multiple win-win

We advocate mutual understanding and tolerance, value diversity, and view our corporate culture from a global perspective


Sizheng as an expert conference microphone manufacturer with greater than 300 dealers in a number of provinces and cities across the country. Our best service device makes enterprise far beforehand of other industry friends in the fields of public security inspection, medical education, monetary securities, and government administrative units. Choose audio monitoring devices, feel free to choose Sizheng!


Examination System

Xinjiang intermediate people's court

Bank of Tibet

People's Procuratorate of Xinxing County

Railway dispatch control room

Tianjin bureau of industry and commerce




Sizheng is a leading cctv microphone manufacturer for 10 years. Our products cover with various CCTV microphone, video conference microphone and voice recognition switch. News can let you understanding our company and products application well.

Do Not Use Passive CCTV Microphone for Active CCTV Microphone Use

Passive CCTV microphone is generally not suitable for security surveillance and long-distance sound pickup, but can only appear in the form of computers and mobile phones.......

time: 2019-05-17

Choose the Correct Installation Location for Better Audio Surveillance

The satisfactory sound collection effect of the audio monitor is indeed given to many units the great help in collecting sound evidence. Sizheng would like to tell you how to choose the correct installation location for better audio surveillance.......

time: 2019-05-13

What Are The Conditions For A Good Video Conferencing System?

Video conferencing systems are now more widely used, and more and more video conferencing products are available. How do we choose the right video conferencing system? Here are some briefly introduce about the video conferencing system guide. ......

time: 2019-04-25

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Guangzhou Sizheng Electronic Technology Co.,Ltd.

We provide customers with quality products and provide high-quality services


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