PocketWizard 433MHz Plus III Transceiver - Twin Setbr 32 Channels 16 standard plus 16 Quad-Zone Triggering channels with Selective Quad-Zone Triggering br Auto-Sensing Transceiver br Two-Stage Remote Camera Triggering br Auto-Relay Mode br Long Range Capability br PocketWizard 433MHz Plus III Transceiver - Twin Setbr