Description
TCS Keep-Alive® (KA) devices are used to supply power to decoders during times of power interruption caused by dirty track or problematic track work.
Key Features:
- Newly-redesigned and compact: The KA1 is now half the size of a KA3, making it more space-efficient while still delivering excellent performance.
- Capacitance: Powers HO or N scale locomotives with approximately one-third of the capacitance of KA3/KA4 devices (depending on the locomotive and motor).
- 2-Pin Quick Connector Harness: Includes a convenient harness for plugging into decoders with a compatible socket, such as the T4.
Additional Information:
- Dimensions: 1.063″ x 0.35″ x 0.244″ (27mm x 8.9mm x 6.2mm)
- Scale Compatibility: HO Scale and N Scale
- Input Rating: 11 to 16V



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