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3M Accessories
3M Library Security System
4-4
E 3M 1999 September
4.2 3Mt On-Counter Desensitizer Model
930 (Not For Use With Recorded
Magnetic Media)
Description/Characteristics
The 3Mt On-counter Desensitizer Model 930 is
designed to desensitize 3Mt Tattle-Tapet Security
Strips. This includes strips applied in or on books,
magazines, and other general items.
The 3M Model 930 is not intended to be used with
recorded magnetic media such as audio cassettes,
video cassettes or computer disks as t hey may be
damaged.
Security strips on protected items must be properly
desensitized so the items can be carried through the
library system without causing an alarm.
Model 930
Installation
The 3M Model 930 is a m oveable, non-electric,
on-counter device which requires no installation.
However, it should be located away from areas which
are readily accessible to customers.
A yellow warning label is supplied by 3M and
should be secured on or near the 3M Model
930 to advise customers of potential damage to
recorded magnetic media.
Operating Instructions
To desensitize security strips in books or
magazines:
Draw the spine of the book or magazine across the top
of the 3M Model 930. Keep the spine of the marked
item in full contact with the desensitizer.
To desensitize security strips on general items and
unrecorded magnetic media:
Draw the marked item across the top of the 3M Model
930. Keep the security strip i n full contact with the
desensitizer.
Only one pass is necessary to fully desensitize a
security strip.
Passing the marked item across the 3M Model 930
first in one direction and then in the other (scrubbing
motion), may partially resensitize the security strip
and cause unwanted alarms.