Product DescriptionModule VVS- KB900(cctv keyboard) Power Source: DC9V/5W Power Consumption: 3W Communication: RS485 Distance: 1200M Protocol PELCO-D, PELCO-P, MOLYNK Baud Rate 2400, 4800, 9600, 19200 Most Adds 255/1024 Button: 33 Direction Control 3-Axis Joystick Display : LCD Other: Auto diaplasis, 99DVR control Dimension: 33*18*6cm Weight: 2.5kg Alnico case; LCD screen, 33 buttons 3-axis joystick, 21 steps speed control, PELCO-P, PELCO-D, AD, MOLYNX protocol setting Baud-Rate: 2400, 4800, 9600, 19200. Could control as most 255 high speed domes or 99 DVR.