Hi,
I have two sets of Cactus Wireless Flash Transceiver V5 Duo. Each set has a transmitter and and receiver. It is used to allow your camera to remotely control external flashes. Ideal for Canon and Nikon DLSR cameras. The sets are in mint conditions and have almost never used them. I am selling one set for $70 or two sets for $135.
Please see specs by clicking on the link :
http://www.henrys.com/66066-CACTUS-V5-TRANSCEIVER-DUO-SET-OF-2.aspx
Please ask for Lucien