NEEWER Wireless Shutter Release For 1100D(T3), 600D(T3i), 60D, 550D (Digital Rebel T2i), 500D (Digital Rebel T1i), 1000D (Digital Rebel XS), 450D (Digital Rebel XSi), 400D (Digital Rebel XTi), 350D (Digital Rebel XT), 300D (Digital Rebel),G10, G11, G12 This wireless remote shutter release is very useful and helpful gear for prevent vibration when taking photos under long exposures, close-ups (macro) or continuous shooting. It can instantly trigger the shutter without disturbing the camera in the distance. Widely used to minimize the camera shake for macro shooting or long time exposure, or used to take subjects that are difficult to approach. The frequency is 433 MHZ and receiver uses 2 AAA batteries. Its maximum working distance is up to 3M in open area without blockage. It is able to be mounted on the hot shoe socket, like a flash gun. Its maximum working distance is up to 3m in open area without blockage. It's very suitable for outdoors use, especially to use for geological prospecting, field shooting, mountaineering travel.