Q-EYE-VFW 4-in-1 Full HD Vari-Focal Dome IR Camera

Don't be confused about which analogue camera to buy, this Vari-focal dome IR camera does all the formats:

TVI for HIKVision DVRs and many other manufacturers too,

CVI for Dahua DVRs and a few other brands like IC Realtime

AHD, used on lower-cost budget machines

CVBS, this is the older analogue technology that is used by just about every BNC non-HD camera that's more than one year old.