TCB AUTOMATIC BARRIER 1.use frequency 100% 2.color is selectable 3.optional accessories as loop detector,limit switch and etc TCB ... 6m, use frequency 100%, opening/closing time 0.9-1.4s(speediness), 3.5s(standard), balanced by multi-extension ... , specially MPC controller, optional accessories as loop detector, limit switch, photo beam and etc.TECHNIQUE CHARACTER:Technology:TCB20/30TCB50Power ...