Title: For sale Dahua surveillance camera system with 4 cameras and 500 GB hard drive. Ad Details: For sale is a Dahua surveillance camera set. The system is working and tested. * Company: Dahua * DVR Model: DH-XVR1B04H-I * Number of Cameras: 4 cameras * Hard Drive: 500 GB * Condition: Working and tested Selling the complete set. Interested buyers are welcome. Bids from serious buyers only. May God bless everyone.