User's Manual

Sentinel Installation Manual
3
RAD & TAG DESCRIPTIONS
Field RAD
Field RADs are the readers installed in the room over the area to be protected. It radiates the area
outward with an approximate 120º cone with strength adjustment range of up to 20 meters (65 feet). And
it can be mounted on ceilings to cover an area below its conical beam or on walls to point to a direction
and cover a conical space as well. Area Field is dependent on the height of the ceiling and signal strength.
It periodically radiates the area with an RF coded signal and when the tags detect the signal they will
keep their alarms silent. This type of RADs synchronize with 24vac power source for optimum operation.
So all the field RADs must powered from one 24vac power source.
EAS RAD
RF protection signals are radiated in a conical fashion and therefore can easily extend past the exit. This
means that someone removing an item from the protected zone could possibly be well out of the
protected area before an alarm is emitted. This module is placed at the exit and radiates an RF signal of
same frequency as Field RADs. Its function is to radiate its area, effectively jamming the protection zone
at the exit and in turn causing tags present in that area to alarm. The EAS RAD includes an output relay
port to set off an audible or visual alarm.
EAS RAD consists of one control unit box with RX antenna integrated and one or more TX antennas. The
control unit and the antennas are supposed to be placed at the exit and radiates an RF signal outward to
the exit exterior area.
POS RAD
The POS RAD is integrated with magnet detacher and located at the register counter.The POS RAD
communicates directly with the tag, arming or disarming it. The magnetic detacher is simply a device for
physically unlocking the tag to remove it from the protected article.
POS RAD can also connect to PC software and database by USB port, and fulfill same functions as
mentioned above as well as more sophisticate data mining functions.
Indoor Alarm Device
This device can receive the tag alarm signal and provide LED indication upon different alarms types：Exit
EAS Alarm or Tag Exceptional Alarm (such as metal shielding, tag cable cut or false alarms caused by
environmental interference).
Sentinel Tag
Sentinel tags can be made in a variety of shapes and sizes, be they shell, lanyard, golf, firearm, etc,
depending on the application. Regardless, each tag includes microprocessor electronics to detect signals
emitted by the various reader types and react accordingly. Optionally the tag can also include EAS
technology for compatibility with standard EAS systems.
Protection zone signals are received by the tags to keep them silent. Should the tag be prevented from
receiving the signal (such as from a foil bag or other blocking device), it will automatically self-alarm. If the
tag is opened without first disarming, it will self-alarm. Likewise any tampering or cable cutting will cause
the tag to self-alarm, even if within the protection zone.
As the tag enters the exit threshold it will lose the protection zone signal because of the jamming
properties of the EAS RAD. At that moment the tag will self alarm. Alarming tags will also transmit a
specially coded RF signal that will be picked up by the EAS RAD which will in turn cause an alert signal
out of the RAD to an audible/visual alarm, alerting store personnel that a tag has been detected at the exit.
If the person returns back into the protected zone the tag will stop alarming.
Summary
Sentinel is a very powerful system that blends into the retail décor and does not obstruct the entrances.
Protection zone shaping means that items can be placed quite near the entrance without setting off false