I get questions about the remote I use for my Painters Pole Photography with the Palo Alto adapter. I showed the above video a while back. Since the Canon 550D / T2i is such a popular camera, and I get questions about the remote, I guess it's about time I link out to the official remote for that DSLR. This is a combination remote so you can use the main tethered part alone, or if you need to step away from the camera the main will act like a receiver, and you can use the included Wireless remote. This only works for photos, not video.
Very handy to have, works much better than the Infrared remotes. You don't need line of sight and can be extremely far from the camera itself. As low as $11 dollars, mostly around $15 it's a handy little remote to have in the bag. Here's the same product available for the Canon 550D / T2i.