Quantum Qflash Flash Pilot for Canon (QF9C) Qflash PILOT has a built-in FreeXwire TTL radio and QTTL adapter for controlling an unlimited number of remote Qflashes PILOT's radio sends TTL commands to other remote Qflash TRIO's and Qflash 5dR's up to 600 feet away. Use four AA batteries or any Turbo power pack for PILOT power