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I use the actual Canon TC-80N3. I'm sure the Aputure functions identically, except it does not appear to have the retractable collar on the plug. The Canon plugs have detents which positively engage, locking the plug, which then must be manually retracted to unplug it from the camera. This one appears that it would just slide in.
This may not seem like a big deal, but here's a story I can pass along. I use RRS plates and clamps on all my gear. When I first started using their stuff, I had a lever release clamp on my tripod. One day, I set my 40D with a 24-105L on the tripod and engaged the lever, not realizing that the dovetail clamp wasn't properly seated in the clamp. Naturally, as soon as I let go, the camera tipped forward and started towards the pavement. Fortunately, I had the TC-80N3 plugged in and the cord looped around the tripod. The cord stopped the camera about 2" from the cement, and the LOCKING FEATURE kept the camera safely suspended from harm. I am convinced if I had an aftermarket timer without the locking plug the outcome would have been very different.
Now, is this a common occurrence or something one should factor in when buying a timer? That's for each to decide. I just thought I'd share FWIW.
I've also since changed all my RRS clamps to the screw-knob types BTW!