annoying noise !

[weado]

Hello everyone,
I am equipped with 2 Yi Home 1080p cameras and I'm generally satisfied with them. However, I have a very annoying noise when the camera is in low light conditions, as there is a regular clicking sound. I have disabled the night vision switch, but I still hear the noise. Do other people have the same problem, and how can I eliminate this annoying noise?
Thank you all