Vstarcam C7833 X4 - Problems with electrical voltage

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I have this camera and it continuously goes offline or does not respond to PTZ remote controls.
It seems to me that these failures are due to irregular electrical voltage problems in the area where I installed it.
Is there any way to prevent the camera from malfunctioning due to power failures?.... Is there a transformer or special device for this case?

Hi, Sir/Madam,
You are advised to send this camera to repairment.