BL3000 Serial Microprocessor Control Board,Simplex, Duplex and Group control (by group control board) Speed range: 0.25 ~ 4m/s ApplicationsSimplex, ... Duplex and Group control (by group control board) Speed range: 0.25 ~ 4m/s Applicable for ... up, transferring and saving. Parameter setting up directly on board is also available. Complete unique of intelligence, safety and ...