[RIIM] How much space is available for the user to write their application? 32 KB. Last Update: September 29, 2021 September 29, 2021 1237 RIIM Q&A Related Knowledge Base Posts -[RIIM] What are the best ways to send a multicast message from the Border Router to child nodes?[RIIM] Is it possible to have a RIIM network running only on Mesh Routers, without a Border Router?[RIIM] How many children can each node support?