[RIIM] How many channels are available for HP RIIM under EU regulations? One channel. Last Update: September 29, 2021 September 29, 2021 1466 RIIM Q&A Related Knowledge Base Posts -[RIIM] To what value is RIIM’s radio RF end matched to?[RIIM] How can I use Pin 4, the BSL pin?[RIIM] How much space is available for the user to write their application?