RS232 protocol for CXA61/CXA81/81 Mk II June 05, 2024 15:44 Updated CXA61 CXA81/81 Mk II Serial Control Protocol Related articles What devices can be connected to the IR Input on the CXA61/81/81 Mk II? USB Audio: What type of USB cable should I use? CXC - IR Codes Azur 540R V1/V2/V3 User Manual CXA61/81/81 Mk II Manual