I will add a shameless self plug - but because I also believe it to be relevant info too.
If you use the EASControl (or IIDTool which contains the same EAS functions) to reprogram your suspension heights, your suspension height changes are limited to roughly 40-50mm up and down depending on the original EAS calibration, height sensors, etc. If you use the EASControl in conjunction with rods you can go beyond that range (theoretically to the limits of suspension travel). Using the EASControl allows you to retain the in-cab adjustability that the Llams or Anitas offers - albeit a little slower as suspension height changes take about 30-45 sec (vid - lowering on a RRS
Video - GAP Diagnostic ) to do vs. the twist of a knob with Llams or Anitas. But as compensation, the EASControl / rods combo only requires installation of the rods (no clipping any wires or any electric install necessary) and gives you full diagnostic capability on the EAS system (or the full vehicle in the case of the IIDTool) including fault read/clear, live values, control output, etc. And when I looked at this several months ago, the EASControl / rods combo cost a little over half as much as the Llams or Anitas.