POCKETWIZARD AC57 ADAPTER

The Mamiya AC57 Power Adapter for AC7 Shield by PocketWizard allows use of the PocketWizard AC7 RF Hard Shield with an external battery source. The AC57 sequesters the battery's power cable in a position that minimizes electro-magnetic interference so that the AC7/AC57 combination can effectively increase the range and reliability of your Canon 580EX / EX II Speedlite.