PocketWizard MiniTT1 Radio Slave Transmitter for Canon E-TTL and E-TTL II SystemsWith its low profile design, you can use the MiniTT1 Transmitter on camera to trigger remote E TTL speedlites or studio flashes attached to FlexTT5 Transceivers. Place TTL or manual flashes anywhere to illuminate the scene: Around corners, out of sight and in bright sunlight. The MiniTT1 is compatible with any PocketWizard radio for triggering manual flash or remote cameras. With its low profile design, you can use the MiniTT1 Transmitter on camera to