Canon Remote Switch RS-80N3 (1V/1V HS/3/D Series)
Remote switch with an 2.6ft/80cm cord to prevent camera shake for super telephoto shots, macrophotography, and bulb exposures. the Remote Switch works just like a shutter button, enabling halfway or complete pressing. It also has a shutter-release lock. Its quick-lock plug connects to the new N-3 type remote control socket.