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Choosing the right video surveillance system requires a great deal of precision and familiarity with a variety of cameras and CCTV equipment. The ability to record sound in closed circuit systems has always been one of our customers' concerns. In this regard, you should know that voice recording is possible in all surveillance systems and CCTVs. The need for voice recording technology in surveillance systems can be found in the inter-governmental agencies, agencies, companies, etc. One of the most common questions. In closed circuit systems, it is possible to record sound by equipment such as NVR. In short, it is possible to record sound in all surveillance systems and all types of CCTV equipment. Microphones in surveillance systems have many uses in different locations and are usually installed indoors. In outdoor environments, of course, you can also use surveillance cameras that have weather-resistant microphones. It is better to keep the microphone away from waves and magnetic devices for noise and sound. Cordless microphone noise can also be from a microphone cable to the recorder. You can also use high-noise cables. Microphones often allow the use of audio and video together. Usually the power of the microphones is answered by the camera adapter which you need to connect from the camera to the microphone. This CCTV microphone is part of the CCTV controller.