The Conceptus Tongue switch with Canon digital plug is compatible with many of the Canon series of digital cameras, such as the EOS 1D, 5D, 10D, 20D, 30D and 40D.
This is a mouth-operated, totally electronic shutter releases for use with any still camera with a remote shutter release jack. The switch plugs directly into the camera without need for a separate switch module. The design is securely sealed and waterproof. Since the switch is mouth-operated, it does not interfere with grips on exits or in freefall, or with canopy deployment, control and emergency procedures.
This switch is designed to work with the following Canon models: Canon EOS 7D / Canon EOS 1V / Canon EOS 3 / Canon EOS 1D / Canon EOS 1DS / Canon EOS 1DS MARK II / EOS 1DS MARK IV / Canon EOS 10D / Canon EOS 20D / Canon EOS 30D / Canon EOS 40D / Canon EOS 5D/ Canon EOS D30 / Canon EOS D60.