Plus III
From PocketWizard Wiki
The Plus III is a radio transceiver, capable of acting as a transmitter or receiver for triggering remote flashes and cameras. It requires at least one other PocketWizard radio for wireless triggering. It can be connected to almost any remote flash or camera with the proper cable.
Like the Plus II, the Plus III is a manual flash trigger. It is compatible with all other PocketWizard radios operating on the same frequency. Learn more about the frequencies we use on our Frequency Page. It can transmit and receive on Standard Channels, not the ControlTL Channels used by some other radios for TTL flash and power control.