Elevator control panel / Integrated Control Drive / Built-in Control Drive(U-Con L4000 ). The optimized combination of IOCARD, MSBA, OSBA control panels and U-Con8003 drive results in R2 integrated control drive, with the group control system of which adopting ring network topological configuration, and each system may act as an independent main control cabinet for signal allocation, without the need to set up separate group control unit; The maximum of group control cabinets is 6. The communication protocol is exclusively owned by UNITE Company.