#17565 - TCF-S Firmware Update chip.


In Stock: 2


The TCF-S line of focusers have been discontinued but we still offer firmware update chips.   The chips are installed in a socket inside the TCF-S / TCF-S3 control box or on the TCF-Si / TCF-S3i circuit board.

This replacement firmware microprocessor chip is easily replaced.  Consult the instruction guide for replacement details.

  • TCF-S Focusers with revision 4 - specify firmware v2.40 
  • TCF-S Focuser Revision 5control boards - specify firmware v4.12
  • TCF-Si / TCF-S3i Focusers - specify firmware v3.12