[RC232] Are the RC1140 and RC1240 compatible No. They are not compatible. Last Update: August 8, 2017 July 7, 2017 2317 RC232 Q&A Related Knowledge Base Posts -[RC232] Can a software update / bootloader command be added? We need something that allows us to update the RC232 module in the field via the UART.[RC232] Can we request modifications to the RC232-protocol for additional features?[RC232] In your schematic i can see four connections on the RF Antenna port, A66 0 Ohm Resistor to a LGA Pad, L-Bead to Connector P6, Resistor to UFL Connector P3 ,Resistor to hole. Which of them are necessary for the antenna?