Key Features. 4K Ultra HD Quality Thermal Sensing detection adds an additional layer of security Features new Coloured Night Vision technology 24/7 protection via the Smartphone App for i OS and; Android Massive pre-installed 2TB Hard Drive allows for 150+ days of recording 2 Way Audio means that you can speak to visitors even when you're not home IP66 Weather Resistant design for use Indoors and; Outdoors Plugs right into a TV or Monitor Works with Google Assistant & Alexa. Reliable Wired Connection Protect your loved ones and; property with this multi-camera wired surveillance system with everything you need to do-it-yourself or have it professionally installed See and; Hear Everything in Ultra HD See faces license plates packages and; capture audio with state-of-the-art 4K Ultra HD thats 4x clearer than 1080p with powerful digital zoom – ensuring you wont miss a thing Protection 24/7 Know whats happening at any hour with powerful infrared night vision up to 130ft/40m in total darkness and; the ability to see color video at night up to 115ft/35m when the spotlights are on. Add 4 more cameras for full 8 channel monitoring Heat Sensing Swanns True Detect™ heat and; motion detection triggers video recording push notifications & turn on the spotlights when it detects motion with heat. Set and; Forget Enjoy local recording for up to 300 days+ onto the massive 2TB hard drive with no fees ever. Save still images directly to your Dropbox account to have image evidence safely stored off-site Prevent Unwanted Activity The 4 Sensor Spotlight Cameras 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 What's in the Box. NVR-8580 8 Channel NVR with 2TB Hard Drive NHD-885MSFB 4K Bullet Spotlight IP Security Cameras x 4 Cat 5e Ethernet Cable x 5 (60ft/18m x 4 and; 3ft/1m x 1)HDMI Cable Power Adapter Mouse Mounting Screws and; Plugs Quick Start Guide Theft Deterrent Stickers..