Swann's Professional 16 Channel 8 Camera 4K Ultra HD NVR Security System is sure to keep your home or business safe. Face recognition lets you nominate an unlimited number of people to trigger recordings & alerts. Get video recording and alerts when the shape of a person or vehicle is detected in the image. The powerful spotlight cameras turn on when motion with heat is detected. The built-in speaker lets you talk back and sound an alarm to stop crime before it happens. The super bright spotlights get Night2Day color video of up to 115ft at night so you can see the color of clothing, cars and more. The 2-way audio provides another layer of evidence. Hear off-screen noises and identify voices by their gender, age, accent & language. Record conversations and make sure your kids or elderly family members are being well taken care of by anyone assisting them. Enjoy hands-free security using voice commands. Speak to see video from your cameras via Hey Google & Chromecast, Google Home Hub, or via Alexa devices with a screen, such as Echo Spot, Echo Show or 4K Fire TV. Mount cameras outdoors. Weatherproof design, IP66 rating. Built to withstand rain, snow & heat, all year round. Upload footage from up to 2 cameras and still images from all cameras to your Dropbox account in the cloud. So even if your video recorder gets stolen, you’ll have video evidence off-site. The massive 2TB HDD can store months of footage before overwriting older ones. Easily transfer videos to a USB stick or download via network with no ongoing fees ever. Power, video and audio run through a single Ethernet cable per camera with Power over Ethernet cabling, PoE, making installation a lot simpler. This Security System comes with a NVR-8580 16 Channel NVR with 2TB Hard Drive, 4K Bullet Spotlight IP Security Cameras (x4), 4K Dome IP Security Cameras (x4) Cat5e Ethernet Cable (x9), HDMI Cable, Power Adapter, Mouse, Mounting Screws & Plugs, Quick Start Guide and Theft Deterrent Stickers.