Expand your off-camera flash setup with the Hahnel Tuff TTL Additional Receiver for Canon. Designed to work seamlessly with the Hahnel Tuff TTL wireless flash trigger (sold separately), this receiver lets you add more speedlites to your existing system with no practical limit on how many units you can run at once. It operates on a 2.4GHz radio frequency for reliable, line-of-sight-free triggering at distances of up to 200 metres, and pairs with your transmitter quickly using digital channel matching. Full Canon E-TTL compatibility means the system handles flash exposure automatically, while High Speed Sync and flash exposure compensation give you creative control in any shooting environment. A removable, impact-resistant silicone housing keeps the unit protected on location, and power comes from two standard AA batteries so you are never far from a replacement.