I have recently started using the RF1100-232 module in an Arduino based project. I found it really difficult to find any useful detailled information on this module. The only info to go on was a document I found on some Russian website that appeared to be a machine translated version of the command table that is otherwise only available in Chinese. This really is a shame as this module is some very useful piece of technology.
So I on this website decided to collect all the information I have found out in the hope that it will be useful for others who are also thinking about using this module.