SKU: 2004 Same device, and price as the KA3 but with a plug. If you don't want the plug simply cut it off.
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.
KA3P 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 blue and a black w/ white stripe wire with which to attach it to a decoder.
Dimensions: 1.02” x .45” x .347” or 25.9mm x 11.43mm x 8.81mm