Upgraded from 8 y. O. system. All equipment worked right out of the box. NVR setup is super easy to connect to phone app. Cameras (60VB) very durable as fall from 12' onto asphalt did not damage a thing. Lessons learned: Used UV rated CAT6 cable for outdoor use and solid core indoor with 66 block terminations. Been a professional installer for years and found out via trial and error that ALL CAT 6 pairs must be connected to NVR and camera for operations to work. (Picture shows two systems in use; ProVue camera connections are the ones on the bottom.) Outdoor camera mount (M5B) not waterproof so have some silicone ready to seal the seam. Complaint: Company declares NVR front HD blinking red light is a normal condition. Really? All industry standards say otherwise & it is irritating to see. Have some black tape ready to cover it.