Train Control Systems KA4 Keep Alive 1668

TCS 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 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 to attach it to a decoder.   Dimensions: .52” x .52” x .45” or 13.22mm x 13.22mm x 11.55mm  Scale: HO Scale N Scale  Input Rating: 12 to 16V