Definitely not wireless!
The threaded male end screwed into a threaded female port in the center of the shutter release of the camera. It took me quite a while Googling or YouTube'ing to find where a cable ("wired" rather than wireless) would plug in my 7-year old Canon 550D/T2i!
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...