From what I've read on here and elsewhere, Hikvision are a strong option for security CCTV cameras (though generally need to order via trade to get the best models). I'm trying to figure out if there is one holistic solution that can cover all camera needs for our newly completed build, or if I need to go for a separate system for security and one for monitoring kids. i.e. is there one system that can take 16 camera inputs, record everything (or record when triggered by motion), and provide notifications via an app and live feeds (for both security and monitoring purposes)? We have CAT6 run to each of these locations so POE is an option, as is powering via USB for the internal cameras (I got CAT6 to USB adaptors on AliExpress for cheap). For security (5 domes, 4 bullets): Front door dome. Front garden bullet. Side door dome. Side entrance bullet. Back door dome. Back garden bullet. Granny flat dome. Hallway bullet. Hallway dome. For monitoring kids (6): Kids bedroom x 3. Playroom x 1 Kitchen x 1 Living room x 1. Budget is approximately £2000 GBP for everything, though I'm happy to buy what I can for that now and add later when budget allows if that's what is needed to get reasonably performing gear. So should I be looking at one system or separate and if separate is it something like Hikvision for the security cameras and something like Nest/Arlo/Circle/other for the monitoring cameras? I'm not sure with how much logic can be built into NVRs so don't know if they can be triggered to record and send notifications upon motion detection. For context in case relevant, I have 2 x Ring Doorbells installed, have all lights controlled via Velbus, and have a Cytech Comfort alarm system with 18 PIRs installed so everywhere there's a camera, there's also a PIR which can detect motion. I'm running an oDroid box with OpenHab so should be able to forward motion detection events (e.g. if that would help get the NVR to record upon motion detection if needed). I'm hoping there's so much video tech out there today I'm not expecting too much, but have a sense I might be, so all advice is much appreciated.