1. Professional controller of DVR, Video Matrix, Speed Dome, integrated Box Camera and other CCTV products

2. Up to 4 keyboards can be connected in one controlling system

3. LCD display with error information indication, easy and convenient for operation

4. Long distance control!G1200M (RS-485, 0.5mm twisted pair cable)

5. Controlling up to 255 devices with different address via RS485 bus