DAHUA DH-XVR1B04-I 4-Channel Digital Video Recorder
Model: DAHUA DH-XVR1B04
Video Compression: H.265 + / H.265 / H.264 + / H.264
Audio sample speed: 8KHz, 16 bit/channel
Analogue camera input: 4 channels, BNC
Smart Search and Intelligent Video System