This is a wired system, not wireless. Comes with NO Hard Drive. (Can view but cannot record). Complete system do not need Internet to work. However, an Internet will be necessary if you wish to use mobile for remote view. Day & Night in 1080p Full HD. Day or night, the camera always protects your home with 1080p HD. The camera has 24 infrared LED lights, and the night vision distance can reach 80 feet, even at night, you can see the details clearly. Smart Motion Detection and Rich Alerts. Detect moving objects and trigger alerts when dangers occur. You will receive instant alerts in forms of emails, App push notifications and buzzer alarms in the DVR when invasion happens. You can also set up specific motion zones and adjust the sensitivity to reduce unnecessary false alarms. See Clearer with Upgraded 8CH 5MP Lite DVR. Upgraded 5MP Lite DVR can work with 2MP and 5MP 12.5fps HD-TVI, CVI, AHD cameras. It supports up to 5MP HD video input, allowing clearer and sharper viewing experience. 265+ compression technology reduces video file sizes, save valuable hard drive space and provides an excellent and smooth viewing experience. Local View or Remote View from multiple devices. Local Viewing: No Network needed, just connect the system to a monitor via HDMI/VGA port. Remote Viewing: Download the Zosi Smart app on your smartphone (iOS or Android), and enjoy four cameras simultaneous viewing on the app. You could also view the live view on computer via AVSS PC client. Intelligent Plaback & Backup. Playback only meaningful video such as when motion is detected, Easily backup 2MP video to your USB flash drive. ZOSI DVR offers 4 kinds recording modes to meet your needs: Continuous Record ; Scheduled Record; Motion Detect Record; Recycle Record. You can customize each camera with different recording modes, which allows you to save space on the hard drive. The IP66 weatherproof camera are suitable for both indoor and outdoor use, it perform pretty well on all kinds of weather conditions. DIY Security System-Easy to Install. Easy setup even for beginners. Applied to Multiple Occasions. Not come with HDMI/VGA cable. This camera system do not include the hard drive in DVR.