3' Male/Male AquaBus cable.  Used to connect an AquaBus module (PM1, EB8, etc) to another AquaBus Module or Apex base unit.

6' AquaBus Cable (M/M)

15' Male/Male AquaBus cable.  Used to connect an AquaBus module (PM1, EB8, etc) to another AquaBus Module or Apex base unit.

15' Male/Female AquaBus cable. Extension Aquabus cable used to lengthen AquaBus cables so that modules which are more than 15' apart can be connect together.