[RC232] For EN 300 220, which “receiver category” (1, 1.5, 2 or 3) has been used for conformity assessment of RC1240? The RC1240 is compliant with receiver category 1.5. Last Update: July 21, 2017 July 21, 2017 1289 RC232 Q&A Related Knowledge Base Posts -[RC232] What are the LEDs for? They are not included In the RC2500 datasheet[RC232] Are the modules full duplex ?[RC232] Should RC1140 be better than RC1180for this application because attenuation on water will be lower a at 433 ?