Components used to manufacture the LS100 have become difficult to source so the LS101 has been designed to use new technology to provide the same function as the older LS100

Accessory decoders are the link between your NMRA DCC system and your functional devices (that is turnouts, signals, uncouplers, etc.) on your model train layout.
 
Accessory decoders receive commands sent from the command station via the power station and activate the drives of turnouts or other switching devices. For DIGITAL plus systems these switching commands are activated from input devices, such as, hand held controller LH101, LH100 or LH90 (or in connection with another, compatible digital system).

Dimensions:

• Approximately 3.5 x 3.5” (90 x 90 mm)

3 Amp Maximum 16 v AC Power input needed