Modbus adapter for Samsung RAC, CAC, FJM, and DVM S. CL-MC0301C can control and monitor 1 indoor unit. CL-MC0308C can control and monitor 1 – 8 indoor units on a single system. CL-MC0316C can control and monitor 1 – 16 indoor units on a single system. CL-MC0332C can control and monitor 1 – 32 indoor units on a single system. CL-MC0364C can control and monitor 1 – 64 indoor units on a single system.