381-22018BK1 Kato Standard SX Power Pack Freight One of the two original

One of the two original configurations was a 2

It has better penetration of porous surfaces for better bonding

SD40T-2 SERIES LOCOMOTIVE FEATURES:

● Maintains power to the decoder for up to 10 seconds during electrical interruptions

381-22018BK1 Kato Standard SX Power Pack Freight One of the two originalStandard SX Power Pack Standard DC Unitrack For HO and N Scale Trains (black housing) The Kato Standard SX Power Pack is designed to keep your HO and N Scale standard DC trains running smoothly. Revised in 2024, this power pack is 100% compatible with all Unitrack electrical accessories and is an in kind replacement for previous Kato power packs. It is also upgradeable with alternative AC adapters that will allow greater output for larger layouts