Checklist before purchasing:
1. Power supply, coaxial video cable and DVR are NOT INCLUDED but REQUIRED.
2. Default mode: 1080P AHD video format.
3. Power on the camera, then switch to the corresponding video format that your DVR support.
4. 1080P HD modes(TVI, AHD, CVI) do NOT compatible with 720P or 960P DVR.
5. At least DC 12V 0.5A power adapter is required. If there is no video or IR leds is not working at night, please use DC 12V 2A( or higher) power adapter. It depends on the power cable length and quality.
6. Peel off the protective film on the lens and glass panel before installation.