The UK34 Trigger Extension Cable Connector from TriggerSmart is a female to female adapter for the TriggerSmart Camera Triggering system. It is 2.5mm female jack on both ends that joins two trigger extension cables to increase the length between your camera and the UK15 TriggerSmart Control.
This cable connector does not come included in the TriggerSmart Kit and is an optional accessory to lengthen the trigger cables.