Great products, wide products selection,
with friendly and helpful advice.
I have their
RS232 Level Converter Board w/cable
for my Kenwood TS-940.
Works great, and simple to install.
Works better, installs easier, and cost less than
original Kenwood level converter hardware for
this radio.......IF you could find it. 
Super company to do business with...a no brainer.
You will not be disappointed.
73, Ken AD6KA