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Instrument and meter
Portal type variable intelligence board
400X400 lane indicator
Wind speed and direction detector
Small information board inside the tunnel
Tunnel electric light signboard
Tunnel variable speed limit sign
Tunnel guidance signs and contour lights
600X600 lane indicator
Light intensity detector inside the cave
External light intensity detector
COVI detector
Suspended wall variable information board
Tunnel PLC control box
Tunnel monitoring configuration software
Successful operation!