How to add external microphone to non Audio cctv camera

Инструкция по подключению внешнего микрофона к CCTV-камере для записи звука и его передачи в DVR с использованием RCA и BNC разъёмов. With cameras like this that do not come with inbuilt microphone for picking with inbuilt microphone for picking sound or audio around the cameras, you sound or audio around the cameras, you can as well use the external microphones can as well use the external microphones like this one to pick up sound around like this one to pick up sound around the camera. And because it's a 4 channel DVR, it has four audio inputs channel DVR, it has four audio inputs for each camera that would have been for each camera that would have been connected.