Valufoto Wired Remote Intervalometer/Timer/Shutter Release MC-30 for Nikon D4s, D4, D3X, D3S D810, D800, D800E, D3, D700, D300, D2H, D200, D1H, D1X 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