FlexTT5 (for non-TTL flashes)
Older PocketWizard radios, including Plus, Plus II, etc.
Compatible with flashes that work with a standard hot shoe, including:
Canon Nikon *Sony
Cheetah **Nissin Sunpak
Fuji Olympus Yongnuo
And most other flashes** with a standard ISO 518 hot shoe.
Know your flash's sync voltage! Some older hot shoe flashes have sync voltages that are too high for certain PocketWizard radios and could damage them. Check your radio's specifications to make sure it is compatible with your flash.