Key Features . 4K Ultra HD recording qualityMassive 2TB Hard Drive stores all your recordingsCompatible with Alexa and; Google AssistantWorks with 5MP or 4K Swann Cameras24/7 protection via the Smartphone App for iOS and; Android . Reliable Wired Connection Protect your loved ones and; property by adding compatible PoE IP Security cameras to create a security system that’s truly yours See and; Hear Everything in Ultra HD This NVR is 4K-capable and can take 5MP and; 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 and; trigger recording when they detect heat. The 2-way audio and; siren let you talk back and; scare off intruders Heat Sensing All compatible cameras have Swann’s True Detectâ„¢ heat and; motion detection that triggers video recording and; push notifications when they detect motion with heat. Set and; 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. What’s In the Box . NVR-8580 16 Channel NVR with 2TB Hard DriveCat5e Ethernet Cable x 1 (3ft/1m)HDMI CablePower AdapterMouseQuick Start GuideTheft Deterrent Stickers. .