Specifications
            1 Real-time traffic flow detection   instantaneous speed  92%
                                                               vehicle Classification(1~5) 95%
            2 Statistical traffic data           total vehicle volume (vehicles) 98%
                                                                average speed (km/h)   95%
                                                                vehicle Classification Statistics 95%
                                                               occupancy(%)          95%
          3 Video input :7 channels 1 channel monitoring video, 6-channel detection
          4 Video output:                 1 channel
          5  Communication interface      2XRS232 port,  Baud rate 57600
          6 Digital output                16
          7 Statistical time interval   30s-60s(optional)
          8 Electrostatic discharge             level 3 (6KV)
          9 Electrical fast transient burst    Level 4 (4KV/2.5KHZ)
         10 Surge immunity:        1KV(L-N), 2KV(L-PE,N-PE)    
         11 Voltage dips immunity:  >95%, 30%
         12 Power supply input:         220VAC    3A
         13 Operation temperature/humidity -25°C~+75°C/≤95%, without condensation
         14 Size: (HxWxD) 43.6mm X 430mm X 381mm