Maybe everybody already knows this, but the remote for the Hasselblad cameras uses the same connector and pinout as the remote for the lower end Canon DSLRs (so not the 1 digit: EOS 1D, EOS 5D and not the 2 digits EOS 60D, but the 3 digits EOS 650D / Kiss and 4 digits 1100D / Rebel series). The connector is a standard 2.5mm micro jack.
The original Canon remote is quite cheap and Chinese copies even cheaper. What is even better: in the Chinese remotes for the Canon cameras, there are remotes with extra functions (e.g. intervalometer) and wireless remotes.