[RIIM] How many channels are available for HP RIIM under EU regulations? One channel. Last Update: September 29, 2021 September 29, 2021 1124 RIIM Q&A Related Knowledge Base Posts -[RIIM] Is there an acknowledgement (ACK) from the sensor in order to know if the data has been transmitted correctly?[RIIM] Does RIIM use FEC (forward error correction), if not, why?[RIIM] How many mesh hops are supported in RIIM?