Valufoto Wired Remote Intervalometer/Timer/Shutter Release RS-80N3 for Canon 1D, 1DS, 5D Mark III, 1D Mark IV, 1Ds Mark III, 1D Mark III, 1D Mark IIN, 1Ds Mark II, 1D Mark II, 7D, 50D, 40D, 30D, 5D, 20D, 10D Wired Remote Intervalometer/Timer/Shutter Release Backlit LCD status display with 3 lines for easy viewing of timer, exposure, shooting feature settings Device does not have on/off switch but instead utilizes a standby mode to conserve battery life Great for Landscape photography, astrophotography, product photography, etc. Reduce the chance of blurry photos during extreme low light situations