The RamJet-X controller is available with either the standard or extended length connection cable. How long are they? Let's take a look.

This is a standard unit:

This one has the optional long cable:

Here they are in shown in relation to a stock Carrera wired controller:

How far will they reach? For test purposes, I plugged the controllers into the base and measured how far I could raise each controller before the tension of the cable began to lift the base.

Stock Carrera (it's an older Pro-X model, newer ones might be longer) went about 3'. A stock SCXD controller is similar.
RamJet-X standard length, about 7'.
RamJet-X optional long cable, about 10'.

For tracks set up at table height, the standard length is good. For tracks on the floor, the optional long cable might be preferred.