Claim £15 cashback on the PocketWizard MiniTT1. Offer runs from 15/08/2012 - 15/08/2012 (inclusive). For more information and to claim the cashback please click here.The Pocket Wizard Mini TT1 is a Hotshoe-mounted Transmitter. It fires one or more PocketWizard FlexTT5 transceivers attached to compatible Canon flashes or any PocketWizard receiver designed for triggering a flash or remote camera. Their smallest radio to date (as of July 2012) it also has none of the infrared limitations of some other triggering systems; corners and walls pose no problems.-->The Canon-type variant here has E-TTL II and power control for Canon flashes and select studio lights transmitting all the complex data eg. ISO or exposure changes.The patent pending HyperSync and FP Sync systems extend sync speeds well beyond X-Sync capabilities – up to 1/8000sec in some combinations of camera and strobe, and for mixing direct and remote flash, it has a female hotshoe for attaching a flash on top.ExpandabilityWith an optional PocketWizard AC3 Zone Controller you can set up to 3 zones for custom lighting, independent of each other, either using E-TTL II or manual mode.You can also adapt to Elinchrom RX or Paul C. Buff flash systems with the optional PowerST4 Receiver, PowerMC2 Receiver or AC9 AlienBees Adapter when used with this transmitter and a FlexTT5.PocketWizard Utility download is provided via the unit’s USB port for latest firmware.Main SpecificationsChannels: 35 over 5 frequenciesFrequencies: 433.42 – 434.42MHz (CE) Transmission Power: Range: Up to 800ft (10-240m) for CLS and E-TTL II in ideal conditions, up to 1200ft (10-365m) for basic trigger modeMax Frame Rate: 8fps in E-TTL II and standard modesHotshoe Voltage Protection: Up to 50VUSB Port: USB 2.0, Mini-BPower Source: CR2450 (included) or CR2354 button cellBattery Life: 30-50 hours approxDimensions (L x W x H): 71 x 49 x 33mmWeight: 65g (including battery) Box includes USB cable, manual and battery