Swann CONHD NHD 818 4MP HD Security Camera w Audio Works With Nvr7400 4MP video quality / Weather proof IP66 casing / Easily connects to your HD NVR Durable Powerful 4MP. Waterproof casing and hidden enclosed cabling to survive the harshest conditions! See every detail in rich, super HD State-of-the-art security camera with outstanding 4 Megapixels Super HD video image clarity from 75% more pixels than 1080p enhanced digital zoom providing close-up detail that has to be seen to be believed Camera features a built-in microphone so you can see hear what’s happening See everything during the day night with wide 75 viewing angle the latest infrared cut filter for amazing night vision to 100ft/30m Built to suit any conditions with weather resistant rating of IP66 for indoor outdoor use Everything needed for HD security made easy Professional surveillance camera gives you the peace of mind from being able to see the detail you need including license plates, faces, clothing colors more, all in stunning 4 Megapixels Contents NHD-818 Camera only(CONHD-A4MP) Replacement Camera Only, no cables included. VERY IMPORTANT: If you have an used NVR , and if the camera doesn't connect after 2-3 min, please make sure you reset the DVR to the default settings, or release the IP address from the old cameras, otherwise, the camera will not work, because the NVR memorize the IP from the old camera. To load the default settings , go into the Menu of the NVR, choose System, Maintenance, Restore, Check the box for “ALL”, then press “Ok”, then once again “Ok” to confirm. The NVR should restart and then you should see the image from the camera. If you have difficulties with the setup you can also you can call Swann customer service ,free 24/7 at phone number 18006272799, and they are able to help you with the setup. Compatible with Swann NVR 7300 or NVR 7400