TCS Model Trains

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.

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.

The T-1"-21 is a harness with 1" (2.54 cm) wires connecting a 9-Pin JST to NEM21 socket.

This is the KA3 Keep Alive from Train Control Systems.

Producing sounds with the clarity and volume of a much larger speaker these 20mm (0.79") speakers are perfect for tight installations that still require BIG sound.

This decoder has a 9-Pin JST on the front. It is compatible with any T-Series harness and also includes an auxiliary harness for attaching your speaker, Keep-Alive, and for the additional lighting functions (F3 and F4).