[W-MBUS] Can I buy MBUS1 or MBUS2 modules? No, these are obsolete and replaced by MBUS3. Last Update: August 8, 2017 December 13, 2016 1377 Wireless M-Bus Q&A Related Knowledge Base Posts -[W-MBUS] “Under which circumstances does the Radiocrafts module filter out messages ? Is it based on the C-Field on the data link layer and the CI field on the application layer ? If so, is there a way to switch this off ? “[W-MBUS] “What happens with frames, that are received while transmitting another frame? If I understand this correctly the module returns to idle state after the frame is sent to the uart. That means, if a frame is sent, while the module is not in idle mode, it can’t recognize the second frame. Right? “[W-MBUS] I have one development board Wireless M-Bus (RC1140) that we got in 2010. HW version 1.2. I’m pretty sure this is out of date in software revision. Could you please advise latest FW revision and procedure to upgrade?