You remind me of more peaceful posts from Mr. Stanley, where he asked for information on scalers and I provided illustrations and info on three different sizes of fish scale removers.
Nothing more was needed than MX-900 because this is the Complete Control Forum and the URC MX-900 is the only MX-900 that's part of the Complete Control group of products. Your comment would be valid in the Installers' Forum.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw