[RC232] Are the modules full duplex ? Module is half duplex. Sent and receive but not at the same time. Last Update: August 8, 2017 February 3, 2017 2884 RC232 Q&A Related Knowledge Base Posts -[RC232] What are the LEDs for? They are not included In the RC2500 datasheet[RC232] Can I use the RC1190HP in US?[RC232] What is the data transmission rate of the 1180HP at 5 km ?