Now Available: NEW Keep-Alives®!

New KA1 and KA2 Keep Alive Devices


Those of you that visited us at the Amherst show got a firsthand look at our reintroduction of the KA1 and KA2 line of Keep-Alive® devices. We're excited to announce that these new Keep-Alive® devices are NOW SHIPPING!  ORDER HERE

Almost perfect for our N-scale faithful, the redesigned KA1 and KA2 Keep-Alive® modules are smaller than our existing KA3 and KA4, but still hold a powerful charge - enough to keep your HO and N scale locomotives running across dirty and faulty trackwork. 

Keep Alive Size

The new Keep Alive® devices are considerably smaller than the KA3/4. Considering the overall cubic volume of the devices, the KA1 is 55% smaller than the KA3, and the KA2 is 49% smaller than the KA4. At roughly half of the original size, these miniaturized devices will enable modelers to fit Keep Alive® in smaller spaces and use them for a wider variety of installations - especially in N scale!

Keep Alive Power

Though the new KA devices are smaller, they still pack a powerful punch! Both the KA1 and KA2 sport roughly one third of the power of the KA3/4, which is enough to keep even HO-scale sound decoders cruising across dirt, dust, gaps, and anything else your rough rails send its way. Remember: the number of lighting functions in use and motor activity will drain the Keep Alive® at different rates. 

These new Keep Alive® devices are available now! Head to our store to place an order today!


Product Dimensions (Inches) Dimensions (Millimeters) Cubic Volume (MM)
KA1 (New!) 1.063" x 0.35" x 0.244" 27mm x 8.9mm x 6.2mm 1,490mm3
KA2 (New!) 0.35" x 0.35" x 0.61" 8.9mm x 8.9mm x 15.5mm 1,227mm3
KA3 1.02” x .45” x .347” 25.9mm x 11.43mm x 8.81mm 2,608mm3
KA4 .52” x .52” x .45” 13.22mm x 13.22mm x 11.55mm 2,018mm3

See a clip of our announcement at Amherst here:

Keep-Alive® devices are compatible with most DCC decoders. Please consult your decoder manufacturer for compatibility with other devices. 

Find out more about Keep-Alive devices on our KA page.

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