Hähnel Viper TTL Receiver - Canon

Additional Receiver for Viper TTL


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  • Use additional Receivers to trigger multiple flash units
  • An unlimited number of Receivers will work with one Viper Transmitter
  • Full wireless connectivity with the MODUS 600RT Speedlight
  • Digital Channel Matching provides reliable connections
  • Control Speedlight mode remotely
  • Compatible with original speedlights
  • microUSB socket for firmware upgrade
  • 2.5mm socket to connect to studio lights 


  • Download and save the zip file below for the VIPER TTL
    Note that the firmware installation and upgrade can only be done using a Windows PC or laptop
    Apple IOS not compatible
  • Select the correct language (EN, FR or DE)
  • Follow the detailed instructions which are included in the contents of the zip file below
  • Any problems, contact info@hahnel.ie

Corrects an intermittent white balance problem when used with the Canon 5DMk3
Corrects an intermittent over exposure problem when used with the Canon 700D 

New compatibility with Canon 6DMkII / 77D / 800D / M3 / M5 / M6
Addition control of Multi mode from the camera menu (in previous versions, when the Viper TTL was in Multi mode, the flash control options on the camera menu did not show Multi mode and the operating parameters could not be changed.  In V23, when the Viper TTL is in Multi mode, the camera menu does show Multi mode and it is possible to change Times / Hz / Power from the camera menu also.