The LokSound by ESU PowerPack Maxi has been developed as the powerful complement to the LokSound L V4.0 or LokSound 5 L decoder. It can also be connected to all LokPilot V4.0, LokSound V4.0, LokSound V4.0 M4 or LokSound 5 decoders. It provides uninterrupted power to your locomotive when traversing dirty track and long turnout ladders. All sound, lighting and motor functions are buffered with the aid of two energy storage capacitors enabling your models to continue running for up to three seconds. PowerPack Maxi measures about 1-3/32 x 5/8 x 1/2′ 27.5 x 15.7 x 13mm. PowerPack Maxi is part of the broad assortment of ESU DCC accessories.WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov