7930 OPERATING INSTRUCTIONS
Introduction
The 7930 is an asset protection transmitter that can be used to monitor priceless artefacts and works of art, that
are on display and easily accessible. Transmitters can be discreetly placed, without taking away the enjoyment
of viewing interesting historical objects. Movement of the protected item immediately alerts staff or
management ensuring swift and effective action, minimising risk.
Refer to the Iris+ Installation Guide (MK192) for details on adding the device to the system.
Device application
The unit will respond to acceleration above a pre-set limit in the direction of A, B or C or any combination of the
three (see figure 1).
The best way to protect a conventionally mounted painting is to suspend the unit from the underside of the
top horizontal stretcher, slightly away from the vertical stretcher (approx. 5-8mm, see figure 2).
The use of the gold plated suspension springs allow the unit to freely rotate and allows a certain amount of
protection from natural vibrations. When the picture is disturbed the unit bumps against the side or front and
will trigger an alarm condition.
The 7930 transmitter is dispatched down powered to save battery life.
The unit has 3 internal switches. Switch 1 determines device power (on or off),
whilst switches 2 and 3 control the device’s sensitivity. Available settings are
shown below:
Transmitter Powering & Sensitivity
= device power off
(Switch 1 OFF)
Low
sensitivity
High
sensitivity
Medium / high
sensitivity
Medium / low
sensitivity
Figure 1
A
B
C
Figure 2
Rear view of picture frame
5 - 8mm gap
to side
Frame
Side view of picture frame
Canvas
5 - 8mm gap to
rear of picture
Wall
Frame
Least sensitive
Most sensitive
As
despatched
7930
PENDANT TRANSMITTER
EN300 220-3
7930
PENDANT TRANSMITTER
EN300 220-3
7930
PENDANT TRANSMITTER
EN300 220-3
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TSD217 (Iss 6) 26/07/2018 AJM
