36125 SmartDecoder: 4.1 (G-Scale) $154.99 Default Title - $154.99 Quantity Please fill in the form below if you'd like to be notified when it becomes available. 36125 Smart Decoder 4.1 (G-Scale) Features Provides for Digital/DCC control of locomotives Made in Germany (This item converts locomotives to digital control. If you would like sound, you will need a sound kit as well.)