Want to control your Tower of Power from your computer? Then you'll need this. The Communications cable connects directly from your computer to the Temperature Control Module, using a free piece of software provided by Blichmann Engineering (works on Windows XP, Vista, 7 & 8 only). The software with the Communications Cable allows you to program the Control Modules so that you can use automatic mash profile ramping, along with monitoring via your PC.
NOTE: This is not a simple USB cable. It converts the control module's RS485 protocol to USB via an embedded chip in the cable.