Use the interface converter to control a PTZ Dome Camera (TV7600 - TV7604) from your PC. The interface converter is connected to a USB 2.0 port at the PC and the dome camera is connected to the interface converter using a 2-core RS485 bus cable. You can operate up to 31 dome cameras with your PC. You connect one dome camera directly to the converter and connect the other 30 cameras to each other. The maximum transmission range from the interface converter to the last dome camera is 1200 meters.