Review on REOLINK 4MP 8CH PoE Security Camera System for Home and Business, 4pcs Wired Indoor Outdoor 1440P PoE IP Cameras, 8MP 8CH NVR with 2TB HDD for Continuous 24/7 Recording, RLK8-420D4 Enhanced SEO by Grant Nordstrom

Overall it's pretty affordable and the mobile app works great but durability is questionable. I still have 3 out of 4 cameras working after 2 weeks but one camera failed after 5 days. I've gone through all the troubleshooting and it's just a bad camera - it needs to be replaced and I'm in the process of doing it. Everything is fine when there is good customer support, but depending on where you install these cameras, reliability is paramount. In a business setting, I would advise spending more on off-the-shelf devices.