I have back and forth over whether I should buy a (cheaper) IR remote release or to even make a little effort craft from my smartphone a remote release. Then a lot of choice on this product, because of the range. That was worth the extra money. Monday ordered at 23:30 and on Wednesday the product was in the packing station. Put the transmitter and receiver on channel 1 and ... nothing. Did I do something wrong? Immediately the illustrated instructions studied. No, everything right. So must be the canal. Both Channel 4 and ... flawlessly. By half-pressing the button on the remote control you and the receiver will light up the camera green. Then you know that communication is and the image can be shot. The only drawback may be the size of the receiver, which can be mounted on the hot shoe. It is connected by a cable to the camera. So if you want to use the built-in flash, you can let him confidently dangling. Works anyway. All in all this is wireless remote release its firm place in my camera bag.