ZOSI 1080P 4-in-1 TVI/CVI/AHD/CVBS CCTV Security Camera 36 IR LEDs Outdoor Night Vision 100ft 3.6mm Bullet Camera Aluminum Metal Housing, Compatible for HD-TVI, AHD, CVI, and CVBS/960H analog DVR

so what I went for in the end is this hikvision DVR and this DVL allows you to do up to 4k resolution but I decided to go for HD rather than 4k the cameras I went for with these vivid HD what we call sony starlight camera and basically how they work is that they operate in really low light and still keep the footage like daytime rather than going into infrared that's the camera I've got which comes in the template the instructions comes with some screws and wall plugs which I won't be using I'll be using my own and then there's a little allen key so you need to get into the camera I guess that's probably because some of them have got SD cards on so then you've got the four screws at the back I've gone for grey you undo this there's this piece and then the camera which you can move around this denotes the bottom of the camera view and this will move around so that it's not in the way of