... control keyboard. Multi-protocol and customized protocol compatible, RS485 control PTZ and DVR Control Keyboard3D Rocker, Large LCD display, PTZ and DVR control keyboard ... , PHILIPS, SAMSUNG, VICON, PANASONIC and customized protocols etc.2. The DVR control1). Though the connection to DVR by ... are: HI, DA, DR and customized protocols etc.2). Support the RS232 and RS485, RS232 hardware installation is ...