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3M Library Security System
3M Accessories
4-25
E 3M 1999 September
4.10 3Mt On-Counter Desensitizer Model
763 (For Use With Recorded Magnetic
Media)
Description/Characteristics
The 3Mt On-Counter Desensitizer Model 763 is
designed to desensitize 3Mt Tattle-Tapet Security
Strips. This includes security strips which have been
surface-applied t o audio and video cassettes, and
prepackaged computer software.
This device is not
intended to desensitize security
strips which have been applied directly to computer
software, as the disks may be damaged.
Security strips on protected items must be properly
desensitized so the items can be carried through the
detection system without causing an alarm.
Installation
The 3M Model 763 is a m oveable, non-electric,
on-counter device which requires no installation.
However, the 3M M odel 763 should be used and
stored away from areas which are readily accessible to
customers.
Operating Instructions
To desensitize security strips:
Draw the marked item across the surface of the Model
763. Make sure the strips are against the back or
horizontal surface of the unit. Place video tapes
against the back of the unit as shown in the following
example.
Place audio tapes on the horizontal surface of the unit
as shown in the following example.
Only one pass is necessary to fully desensitize a
security strip.
To avoid damage to credit cards or computer
software, do not permit credit cards or
computer disks to make direct contact with
the 3M Model 763.