Had one, real piece of junk. It works as intended for 3-4 months then goes off whenever it wants, and/or gets impossible to turn off even when removed from the disc.
Here even ressellers advise against them, they are just fed up with returns.
FYI...disc locks are seldom certified by the insurers here, damned too easy to remove, it takes less than 10 secs for a below average thief to remove them....any of them. The only certified locks are U locks and reinforced chains from ABUS, France Antivol etc...
here is a link with the latest "SRA"certified locks
www.sra.asso.fr Hope this helps.
An essential addition is for each system the certification date labelled below each system "date de classement xx/xx/xx" : the latest the bettter.
[ This message was edited by: Philounet on 2006-06-15 20:23 ]