Cheaper than the Canon one,
This review is from: Remote Switch Cable Shuttle with Locking for Canon EOS 10D 20D 30D D30 40D 50D 7D 1D 1Ds 5D 7D as RS-80N3 (Electronics)
Cheaper than the Canon one and does the job. Only had 10 months and t doesn't work anymore and I have tried on another Canon camera. I guess you get what you pay for.