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.

To view more

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.

The principle and precautions of the CCTV microphone

The CCTV audio mic is a sound collection device for synchronizing the video and audio recording system. Figuratively speaking: the CCTV camera is the eye, and the CCTV mic is the ear. The simple CCTV audio mic is composed of a microphone and an amplifying circuit. ......

time: 2019-07-15

Bank Counter Audio Monitoring Solution

Bank counter digital surveillance system solution prohram will use the newest digital technology and network technology to bank surveillance system comprehensive, for increase the modernization level of bank surveillance, improve the working effectiveness, strengthen security protection, have an irreplaceable important role of deterrence and the fight against crime. ......

time: 2019-07-08

The Reason Why There Is No Sound When the CCTV Mic Connect to the IP Camera

Sizheng tells people the reason why the CCTV mic is not connected to the IP camera by some steps in this article. ......

time: 2019-06-28

contact us


Guangzhou Sizheng Electronic Technology Co.,Ltd.

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


If you would like to leave us a comment please go to contact us