faulty

I have recently bought SD49225T-HN unfortunately on Aliexpress. The system shows the zoom change, but the zoom actually remains the same, does not change, and the camera does not focus. The focus also cannot be set in manual mode and the image is also blurred. I can’t apply for REFUND or get...

Hi folks, So I've just installed a large setup all Hikvision, mainly using DS-2CD2125FWD-I cameras. All powered from PoE either from the back of the NVR (DS-7732NI-K4/16P) or via a separate PoE switch to add more than 16 cameras to the setup. All worked great for a week, then one went off...