Dahua HDCVI XVR-DVR is available in 2.0MP to 5MP, 4channel to 32 channel, all types of DVR/XVR. The Dahua XVR or DVR supports all types of cameras like AHD, CVI, TVI, and CVBS. 1shop BD is an authorized distributor of the Dahua brand. We provide a 1-year warranty on all Dahua brand products.