I have 2 cameras - C210 

This is of 1 camera - 

Model: C210

MAC Address: 98254A828A35

Hardware Version: 2.0

Firmware Version: 1.3.11 Build 231115

Rel.85532n(4555)

from the past 1 month, my cameras are facing a problem where it gets disconnected automatically and a clicking sound is heard accompanied by red blinking of infrared light . I have tried resetting the camera , changed wifis, changed location , tried putting the cameras to a closer location to the wifi but nothing helps. 
please help. 
 

I have a camera C200, which works perfectly fine with the same wifi and the same location .