[RIIM] What application payload length is supported for uplink and downlink packet? Around 84 Bytes. Last Update: September 29, 2021 September 29, 2021 774 RIIM Q&A Related Knowledge Base Posts -[RIIM] How many GPIOs does the Border Router have?[RIIM] Can you use pins 29 & 30 on the RC1882 module?[RIIM] Do I need an external pull-up resistor on the SPI CS (chip Select)?