... .optional accessories as loop detector,limit switch and etc TCB series barrier is a product up grate from Germany ... travelling, so the boom can travel in stability.The standard TCB barrier is used for high frequency spaces, foldable boom ... 3.28M and TCB50 boom is 5.6M.The standard TCB is supplied with a wide range of accessories, specially ... roundOpening time:0.9s/1.4s3.5sTCB: Traffic barrier TCB series