[RC232] Are the RC1140 and RC1240 compatible No. They are not compatible. Last Update: August 8, 2017 July 7, 2017 2187 RC232 Q&A Related Knowledge Base Posts -[RC232] Is multihop supported?[RC232] It is possible to set either4-Byte or 1-Byte addresses in non-volatile memory?[RC232] When a packet is transmitted from one module to another, what is the receiving module going to output on its UART? The exact number of bytes sent? Or will it add some extra information like “Byte count, sender address or CRC”?