The Hahnel Viper TTL Canon is a transmitter for controlling up to three flash groups. It features an LCD screen and Digital Channel Matching technology. Its capabilities include:

• TTL
• Manual mode
• Stroboscopic mode

The LCD display provides information for groups A, B, and C as well as flash power. Compatibility includes genuine flashes and the MODUS 600RT. The range reaches up to 100 m, and it includes a microUSB port for firmware updates.