With 2-Pin Quick Connector Harness for power.

• The Keep Alive® (KA) devices are used to supply power to decoders during times of power interruption due to dirty track or problematic track work.
• The KA4-C will power an HO-Scale locomotive with headlights on for approximately 6 to 15 seconds (depending on the locomotive and the effciency of the motor).
• This KA4-C will work with Keep Alive® ready decoders and most non-TCS decoders.
• TCS decoders manufactured after February 2012 are Keep Alive® ready.