Servo Cable, 12" Y-cord
The Y can can also be used with the fascia controllers to provide two control points for one switch (For Octo III the Mntry jumper must be on).  
Y cables can also be used to attach two servos to one output.  Both servos will move in the same manner at the same time.  (Note: some users have had trouble getting this to work with some servo types).  
A third use is to connect a DPDT relay and a fascia controller to the same control input (NOT a servo output) so that a relay and a fascia controller can be used at the same time.
 
SRX003   MSRP $3.75 USD