RailPro LM-3S HO Scale Locomotive Decoder Module with Sound – #634-LM-3S

The new LM-3S Locomotive modules have twice the program memory and twice the storage memory.  Extra program memory will allow us to add more features and improved sound with program updates. Extra storage memory will allow more sound files, pictures, and light effect files to be loaded! 
IMPORTANT: Be sure to update your HC-1 and HC-2 to the latest programs to properly access the features of LM-3 modules.