Quantum FreeXwire Receiver for Quantum Trio, Pilot and Copilot Systems (FW8R) Receives wireless TTL information up to 600-Feet from Qflash controller Can receive a sync signal to fire non TTL flash up to 1000-Feet With 8 independent channels you will never have interference from other radio remotes. Quantum Trio, Qflash with FW7Q FreeXwire receiver module, or popular Canon or Nikon TTL flashes with Q-link