The PocketWizard FlexTT5 is a dedicated Canon E-TTL II wireless flash transceiver that brings professional-grade flexibility to your lighting setup. This versatile unit functions as both a transmitter and receiver, allowing you to place TTL or manual flashes anywhere in your scene -- around corners, out of sight, or in bright sunlight -- without the limitations of infrared technology. The FlexTT5 mounts directly into your camera's hot shoe with no special settings required, and supports single or multiple dedicated flash units. It features up to 20 ControlTL channels for TTL photography and 32 standard channels for manual flash work, with a three-zone selector switch that integrates seamlessly with Canon's zone and ratio controls. High-speed sync capability reaches X-sync speeds up to 1/8000th with full-power flash, whilst the Learn Mode enables field programming with other PocketWizard radios. The unit includes a mini-USB port and PocketWizard Utility software for customisation and future firmware upgrades, making it a powerful tool for any Canon DSLR photographer looking to expand their wireless flash capabilities.