Each camera has been tested at least 3 times before shipment, if there is any question, please contact Honic service team first. Please contact Honic support team for any question during installation. 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 2A power adapter is required. If there is no video or IR leds is not working at night, please use DC 12V 3A( or 5A) 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. Specifications: Image sensor: 1/2.8" Starvis Back-illuminated CMOS Sensor Effective Pixel: 1920*1080 in HD mode Lens: 2.8-12mm manual zoom megapixel lens Infrared LED: 42μ x 4PCS with 100-130 feet IR distance. Camera feature: Day/Night; Auto/Manual White Balance; Auto/Manual Gain Control; DNR; Picture adjustment; WDR (HD mode only); OSD support; UTC support (HD mode only) Functions: SENS-UP; AGC; HLC; BLC; WDR (ROI); SMART IR; AWB; MIRROR; FLIP; ACE; DEFOG; MOTION DETECTION TEXT ALARM; CAM TITLE Housing: Metal, IP66 IR-cut filter: Yes Power Source: DC12V±10%; 2000mA Operation Temperature: 14F-122F, RH96% Max