Peace of Mind From Every Angle Reliable Wired Connection Protect your loved ones property by adding compatible PoE IP Security cameras to create a security system that’s truly yours See Hear Everything in Ultra HD This NVR is 4K-capable and can take 5MP 4K (8MP) cameras, all with audio recording and impressive night vision for 24/7 protection. Prevent Unwanted Activity Add Sensor Spotlight Cameras that turn the lights on trigger recording when they detect heat. The 2-way audio siren let you talk back scare off intruders Heat Sensing All compatible cameras have Swann’s True Detect heat motion detection that triggers video recording push notifications when they detect motion with heat. Set Forget Store months of recording before overwriting older footage onto the massive 2TB hard drive with no fees ever. Save footage directly to your Dropbox account 4K Smart Video Analytics Add 4K cameras to get smart video analytics that are exclusive to 4K cameras, such as Face Detection, Line Crossing and more. Pls make sure your cameras are compatible before you place the order: https://www.swann.com/media/wysiwyg/docs/swann-camera-compatibility.pdf Send us a message if you have any questions.