Neewer 3-in-1 2.4GHz 16 Channel Wireless Flash Trigger Remote Control with 1Transmitter 2Receiver for Canon Nikon Olympus Pentax This Wireless Flash Trigger & Remote Control is a versatile, reliable remote control kit that will trigger off-camera flash units and studio lights from up to 3 feet away. It also provides the convenience of a wireless camera shutter release, ideal for photographing wildlife, and also for macro and close-up photos or long exposures, where the slightest camera movement can ruin a picture. Working on the 2.4GHz frequency gives you reduced radio interference and an extended range (up to 32ft/1m) - you don't need to have line-of-sight alignment, either, as radio waves will pass through walls, windows and floors. Receiver includes 1/4"-2 tripod mount. 16 channels selectable.