Key Features: 1. Steel shell. Computer-keyboard-simulation design. 2. LCD Chinese/English display 3. Self-test function 4. Error correction of the joystick parameters 5. The RS-485 communication interface is designed to be 1500W lighting-protective, short circuit protective and auto-recoverable 6. Monitor/camera control 7. Pan-tilt-zoom/lens/auxiliary device control 8. Preset position setting/calling control of camera 9. DVR control 10. Main/Vice-control operation mode of keyboard 11. Build-in multiple control protocols to control speed domes made by different manufacturers 12. Variable speed control, multiple preset positions tour setting and alarm auto-reaction configuration of the speed dome pan-tilt-zoom 13. Real-time display of the working status of decoder and matrix 14. Annunciator arm/disarm setting and state query and display function 15. Keyboard beeps upon receipt of an alarm and displays the alarm site 16. Provide log-on operation for 8 groups of administrators and keyboard lock function 17. Anti-surge measures, lighting-protection