Train Control Systems TCS #2005 KA4-P Keep Alive Power Supply HO Scale
ABOUT THIS PRODUCT
Train Control Systems TCS #2005 KA4-P Keep Alive Power Supply
* 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.
KA4 will power an HO-Scale locomotive with headlights on for approximately 6 to 20 seconds (depending on the locomotive and the efficiency of the motor).
This Keep-Alive® includes a 2-Pin Quick Connector Harness for plugging into decoders with a compatible socket. , such as the T4.
Dimensions: .52" x .52" x .45" or 13.22mm x 13.22mm x 11.55mm
New in unopened packaging
Will combine shipping on multiple items
* 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.
KA4 will power an HO-Scale locomotive with headlights on for approximately 6 to 20 seconds (depending on the locomotive and the efficiency of the motor).
This Keep-Alive® includes a 2-Pin Quick Connector Harness for plugging into decoders with a compatible socket. , such as the T4.
Dimensions: .52" x .52" x .45" or 13.22mm x 13.22mm x 11.55mm
New in unopened packaging
Will combine shipping on multiple items
SHIPPING
Orders ship within 1 business day unless otherwise specified. All shipments are professionally packaged to ensure safe transit to you.
Most orders ship via USPS Ground Advantage or UPS Ground, tracked and insured. Depending on the value of the shipment, signature confirmation may be required.
You will receive a tracking number once the shipping label has been generated so that you may track shipment progress.
RETURNS & SUPPORT
- View our Return Policy here.
- Get Product Support resources here.
- Questions? Contact us.

Train Control Systems TCS #2005 KA4-P Keep Alive Power Supply HO Scale