This remote cord + wireless remote combo was dirt cheap and I had to have it. I use these when i'm doing my Pole Photography (blogged about it earlier), so that I can trigger the camera while it's about 12' feet in the air. They work on multiple types of Canon Cameras. Check out the video on how cool these things are. I bought mine from this seller. These work much better than the RC1 infrared type remotes. Click here to purchase for as little as $16.00 dollars + Free Shipping!