did MTH make more than two versions (releases) of the DCS hand held Remote Controls....50-1002 & 50-1038 ? Someone told me that there were more than those two that I mentioned above. Was the MTH #50-1002 DCS Remote Control the first one that they made ? If came out in 2000. I want to get this topic settled because I am told that I am wrong...that there was more than the #50-1002 & #50-1038. Looking for some help from people who may know.