This all new 4 channel HD dvr kit is the best dvr kit in the market. It is a full pack combo which does not require any other components. This dvr kit is best suitable for buyers who are looking for cctv surveillance for thier shops, warehouses, office, schools, tuitions, classrooms, retail stores and for home security also. Everything thing is included in the package you just have to arrange for an electrician who knows how to install cctv kit. If you are confident enough you can do it by yourself aswell.