[This review was collected as part of a promotion.] I've had my Night Owl 2K HD DVR Security System for about a month and I really like the sense of security, it gives me. This security set included 4 Cameras, which I set up on each side of my home and it also came with a 1TB DVR, so I can save a ton of recordings, without worrying about a monthly fee. Setting up this security system, was easy and only took around an hour to do so. I really love that I can connect this system, directly to my TV and have live access 24/7. There's also a mobile app that allows me to view live video, but I found the app to be a little more inconvenient, than it was convenient. I only had notifications set for Human and Vehicle detection, but I kept receiving multiple notifications a day for animals, clouds and shadows, being detected as humans. I still occasionally use the app, but I now have notifications turned off. Another issue I ran into is the siren feature. I was really excited about this feature! I could make people aware of the fact, that they were being recorded and being able to possibly prevent things from being taken from my property, was like a dream feature! Unfortunately, the siren was going off, all day and night, from any type of movement. The cameras are definitely great quality and I love that they're multi-functional. They come with built in spotlights, very clear 2-way Audio and beautiful clear videos, during both day and night! Even though I'm not very fond of the app and the siren wasn't what I'd hoped for. I'm very happy with my Night Owl Security System and the peace of mind, it gives my family and myself!