Tape Switch

A tape switch is comprised of a 3-foot long encased switching element that is 1/8” thick. The switching element is connected to a triggering transmitter via a 15 foot “mouse style” cable. The trigger transmitter is housed in a small high impact plastic case, powered by a 9vdc alkaline battery. A tape switch can be easily concealed such as under mats, buried or placed under turf, ladders, stairs, etc. Eight ounces of pressure will activate the tape switch to send a trigger command to the Sentinel unit. Tape switches are completely weatherproof and water resistant.

Passive Infrared Motion Detector (PIR)

The Passive Infrared Motion Detector (PIR) detector head is 3/4” diameter by 3” long. It is connected to a battery and trigger transmitter via 15-foot “mouse style” cable. The detector head has a conical detection pattern of 11 degrees out to fifty feet. This trigger is well suited for use and properly placed minimizes false alarms as the 11 degree detection pattern is very localized. The transmitter/battery housing utilizes one 9vdc alkaline battery. A typical alkaline battery is normally sufficient for over 30 days of use, however, the more frequently the PIR is triggered, the more power is used and reduces the battery life. For this reason, PIR’s are better suited for either remote locations where traffic is light or short-term deployments (one week to ten days) in high traffic areas.

Seismic Trigger

The Seismic trigger is comprised of an aluminum stake, connected to a battery and transmitter housing, via 15-foot cable. The stake contains a very sensitive circuit that reacts to ground vibration. Sensitivity is adjustable by a dial located on the transmitter housing. Typically, adjusted to medium sensitivity, the unit will detect a person walking from fifty feet away. The harder the soil, the farther the unit will detect. Another feature included with the Seismic trigger is a set-up switch. Placing the switch to set-up will disable the trigger transmitter and enable a green LED. When the stake detects vibration, it will illuminate the LED rather than trigger “on” the Sentinel. This is very convenient when setting up the “trigger” zone and verifying that it will detect people where desired. When the switch is placed to operate, the LED will not light but the transmitter will send a trigger signal.

Seismic Triggers are the most popular of all our triggers. They are extremely easy to conceal and very effective.

Hand-held Trigger

A simple and small hand-held transmitter, similar to a garage door opener, is supplied as a standard trigger for the Sentinel.These are very handy for setting up a Sentinel deployment. They can be used for quick range checks to find good trigger locations. They are also great to use in operations using informants or other situations requiring “on demand” triggering. They are easily concealed in pants pockets, jackets, etc. This trigger is also powered by one 9vdc alkaline battery.

Three-element Tape Switch

The three-element tape switch is similar to the tape switch except it uses three, 3-foot switching elements. Each 3-foot element is connected by a 12” “mouse style” cable allowing the elements to be placed in a herringbone-type pattern. Three-element tape switches are excellent for burying under trails or other footpaths. When deployed in the described herringbone fashion, it’s almost impossible not to step on one of the elements.

Photo Beam Trigger

The Photo beam trigger consists of two units, an infrared emitter and an infrared receiver. Each unit is powered by eight AA batteries and can remain deployed for one week. An external power jack on each unit will allow larger batteries, such as gell cells, to be used for longer deployment durations. Each unit is approximately 6” tall x 3” deep and 4” wide. They can be placed up to 150 feet apart. Any person or vehicle passing between them will cause a trigger signal to be broadcast to the Sentinel system.

Photo beam triggers are very effective for covering large areas such as fields, pastures, rivers and streams, parking lots, etc. They aren’t triggered by birds but can be triggered by large animals or very hard rain.

Repeater

The repeater is housed in a PVC housing, 3” wide x 4” high x 6” long. This unit is powered by eight AA batteries and has an on/off switch located on the lid. It is very rugged and easily concealed. The repeater will receive any trigger signal and then immediately re-broadcast the signal. The repeater allows you to expand the distance between the trigger zone and the Sentinel, usually over one thousand feet.

Specialty Triggers

Intelepresence will, upon request, design specialty triggers to meet specific requirements. This includes actual triggers as well as multiplexing a network of triggers. Multiplexed or “sequential” triggering will allow placement of two or more triggers to provide selectable triggering thresholds based on time, direction of movement or both.

Automated Cell Notification (ACN)

The Automated Cell Notification (ACN) module is housed in a Pelican 1450 module and utilizes a Motorola 3 watt cell transceiver. Upon activation, the ACN will acquire a cell signal and then dial the pre-programmed telephone number(s). Up to four separate phone numbers can be stored. Upon the call being answered, the ACN will identify itself with a programmed voice message notifying you that there is activity at the Sentinel location. An added feature of the ACN is that the person receiving the call can press the “star” button on their phone and listen in real time, to what’s transpiring at the deployment site. The ACN requires activation with a local cell service provider.

IR Illumination Modules

Mini IR: 2” x 2” x 1.5”. This IR emits infrared light at 960 nanometers. This light is completely invisible to the human eye yet extremely bright to a black and white video camera. Supplied with a 15-foot cable, the mini IR can illuminate most surveillance zones out to 50 feet in zero light conditions. Standard IR: 3.25” x 3.25” x 2”. The standard IR also emits light at 960 nm and is completely covert to the human eye. The effective surveillance range for the standard IR is out to 100 feet in zero light conditions. Both IR modules are water resistant and weatherized.

Intelepresence's products are designed with an open architecture platform providing the option of many add-on modules to expand the system's capabilities.

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Space image courtesy NASA/JPL-Caltech.
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