This Keep Alive device is used to supply power to decoders during times of power interruption due to dirty track or problematic trackwork. The KA2 will power an HO scale loco with headlights on for approx 6-15 seconds! This KA2 will work with Keep Alive ready decoders and most non-TCS decoders. TCS decoders manufactured after Feb 2012 are keep alive ready!
Dimensions: 1.296" x 0.458" x 0.347" 32.92mm x 11.63mm x 8.81mm