Guardsense-wireless Wall En

7/27/2019 Guardsense-wireless Wall En

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GUARDSENSE Wireless

Through-Wall Audio

FEATURES

Stand alone, field-ready system

Digital-encrypted transmission using

commercial open spectrum (2.4GHz)

Uses up to 7 lightweight, weather-proof

wireless microphone sensors

High intelligibility listening through 50

cm concrete walls

Handheld multichannel receiver with

advanced DSP-based noise reduction

Over 8 hours of continuous performance

time

Microphone & contact microphone

operation

Ruggedized case, inc. outdoor mounting

kit

APPLICATIONS

Listening through walls

Structure-borne sound sensing

Life saving, search and rescue operations

Industrial and noisy environments

Standard outdoor surveillance operations

Homeland Security

Suited for use in SWAT & tactical task forces

1. Contact Microphone Transmitter Sensor

2. Microphone Transmitter Sensor

GuardSense provides fire, police and special enforcement teams with handheld, digitally-

encrypted sound monitoring over 250 meters (line-of-sight) via the commercially open 2.4 GHzspectrum, making it an indispensable intelligence gathering tool for nearly every scenario.

Its high performance technology supports as many as 7 lightweight wireless sensors capable of very

high intelligibility - even through concrete walls as thick as 50 cm.

The GuardSense receiver includes DSP based noise reduction, a built-in speaker, sensor power and

signal monitoring, battery-conserving sleep functionality and optional built-in digital recorder.

GuardSense is a wireless, standalone, high performance device that enables you to listen and

record through air and through various surfaces including walls, floors, windows, and doors without

the need to be inside the room in which the recording is taking place.

It provides the user with handheld, digitally-encrypted sound monitoring over 250 meters (line-of-

sight) via the commercially open 2.4 GHz spectrum.



ABOUT THE GUARDSENSE

GuardSense has the following sensor types:

MIC Microphone Transmitter

Sensor

The MIC sensor includes an omni-

directional, highly sensitive

microphone that can pick up a wide

range of speech signals in the

room.

The unit transmits the audiochannel to the receiver, in which

ambient noise can be attenuated via

the Receiver’s Noise Reduction 10

segment’s control.

DMIC Directional Microphone

Transmitter Sensor

The DMIC (Directional Microphone) is very similar to

the MIC as it captures speech, but this sensor uses an

internal Noise Cancelling construction which provides

better directivity (the speakers/target should be in front

of and at the rear axis of the sensor).

This sensor will not pick up signals further away from

the sensor or at the sides of the sensor effectively and

will reduce reverberation and echo. These

characteristics, together with the control of the Noise

Reduction in the receiver, enable maximum

intelligibility from the speakers/target at the front and

rear of the sensor.

TMIC Throw Microphone Transmitter Sensor

Ruggedized omni microphone designed to be

thrown long distances, survive impact and keep

transmitting quality audio.

PMIC Probe Microphone Transmitter Sensor

Ultrasensitive omni microphone attached to 30 cm

semi-rigid probe, designed for insertion through tight

spaces.

CM contact Microphone

Transmitter Sensor

The CM (Contact Microphone) senses thevibrations of thin to medium thickness walls

and converts these vibrations into audio signals.

The sensor should be attached firmly to the

structure, either using the needle or Blu Tack

(for indoor applications) or the double side

adhesive patches (for outdoor applications).

TWCM Thick Wall Contact Microphone

Transmitter Sensor

The TWCM (Thick Wall Contact Microphone) isvery similar to the CM but utilizes higher

sensitivity to maximize faint signals which are

attenuated by thick walls.

This sensor is not ideal for thin structures such as

windows and doors.



ABOUT THE GUARDSENSE

The GuardSense receiver is a multi-channel receiver designed for digital encrypted transmissions whichutilizes advanced noise reduction (DSP) technology. It contains the main components for controlling power,

microphone settings, volume and noise reduction settings, and for attaching headphones and an optional

recording device.

The basic GuardSense system comes with two lightweight wireless transmitter sensors: one microphone

transmitter sensor and one contact microphone transmitter sensor. However, it can be connected up to

seven wireless transmitter sensors in total, which are activated sequentially (not simultaneously).

TECHNOLOGY

GuardSense uses various types of microphones which sense pressure and pressure gradients through the

air, alongside contact microphones which sense the microscopic vibrations resulting from sound and

noises inside the room and translates them into audio signals. GuardSense is based on unique acoustic

technology resulting in high quality sound.

It includes a built-in DSP based Noise Reduction function that increases voice intelligibility in noisy

environments or where there is ambient noise, such as air conditioning or in highly reverberant rooms.

The GuardSense contact microphone heads are both highly sensitive and extremely robust devices.

PRODUCT CODES

GUARDSENSE TACTICAL LISTENING - Full Systems

3-299-581 GuardSense Ultimate - including one receiver with built-in digital recorder, seven transmitters (4Contact microphone transmitter sensor + 3 Microphone transmitter sensor), professional headphones, receiver

antenna, batteries, package of Blu tack adhesive, two-sided adhesive stickers, Needle Kit (Plaster Wall Needles

& Butterfly screws), Guidance Manual & carrying case.3-299-582 GuardSense Professional - including one receiver, two transmitters (1 Contact microphone

transmitter sensor + 1 Microphone transmitter sensor), professional headphones, receiver antenna, batteries,

package of Blu tack adhesive, two-sided adhesive stickers, Needle Kit (Plaster Wall Needles & Butterfly screws),

Guidance Manual & carrying case.

GUARDSENSE TACTICAL LISTENING - Accessories, Components & Upgrades

3-299-583 GuardSense Built-in digital recorder (2-8 hrs)3-299-585 Microphone Transmitter Sensor - Capture sound from all directions3-299-586 Directional Microphone Transmitter Sensor - Capture sound close to the microphone, reduces

reverberation

3-299-587 Throw Microphone Transmitter Sensor - Ruggedized omni

microphone designed to be thrown long distances, survive impact and keep transmitting quality audio3-299-584 Contact Microphone Transmitter Sensor - attach to window,

doors, thin walls to capture speech through vibration of structures (attach with Blu-tack, adhesive tape, needle kit)

3-299-588 Thick Wall Contact Microphone Transmitter Sensor - Two aggregate contact sensors for attachment to a thick wall (attach with Blu-tack, adhesive tape, needle kit)

3-299-589 Probe Microphone Transmitter Sensor - Ultrasensitive omni

microphone attached to 30 cm semi-rigid probe, designed for insertion through tight spaces3-299-590 GuardSense multi-channel receiver designed for digital encrypted transmissions with built-in DSP

based Noise Reduction function



TECHNICAL SPECIFICATIONS

RF Properties

Transmitting frequency 2.4 GHz

Transmitting principle Digital, encrypted

Maximum number of transmitters per receiver

(one at a time) 7

Maximum distance between transmitter and receiver (open

space) at least 250m

Maximum distance between transmitter and receiver for remote activation (open space) at least 250m

Receiver antenna 5 dBi

Transmitter power (maximum power at max. distance

between transmitter and receiver) 6-100 mW

Acoustic PropertiesIntelligibility through concrete

wall thickness Up to 80 cm (~30”)

Frequency response 20 to 3400 Hz Amplification Up to 10,000

Noise reduction via DSP 0 to 22 dB in 10 steps

DSP latency 10 msec

Headphones output sound pressure

Level 102 dB SPL

Loudspeaker output SPL

(0.5 W @ 1m) >94 dB SPLRecording Properties

Signal to Noise ratio 64 dB

Recording mode Mono

Compression algorithm Without compression, u-

Law, aDPCM 2-and4-bytes

Sampling rate 5.5, 8 (default),11, 16 or 22 kHz

Frequency range 100-4000 Hz

PC interface USB 1.1, exchange rate

up to 5.5 Mbit

Recording TimesWithout Compression

(SR=5.5 kHz) 329 min (55 kbit/s)

Without Compression

(SR=8 kHz) 224 min (80 kbit/s)

default

Logarithmic Compression

(u- Law) (SR=5.5 kHz) 400 min (44 kbit/s)

Logarithmic Compression

(u- Law) (SR=8 kHz) 280 min (64 kbit/s)

aDPCM 4-bites (SR=5.5 kHz) 800 min (22 kbit/s)

Recording Times continued...

aDPCM 4-bites (SR=8 kHz) 560 min (32 kbit/s)

aDPCM 2-bytes (SR=5.5 kHz) 1600 min (11 kbit/s)

aDPCM 2-bytes (SR=8 kHz) 1120 min (16 kbit/s)

Electronic PropertiesRecommended transmitter Photo-lithium CR2 battery type

Recommended receiver batteries 4 x aa (alkaline),

rechargeable can be

used

for shorter operationaltime

Line out (mobile phone ear piece/mic

input compatible) < 10 mVOperational Properties

operating temperature range 0°C to +60°C

(32°F-140°F)

Receiver and transmitter operation time

Up to 8 hoursDimensions and Weights

Dimensions of transmitter (HxDxW) 40 x 70 x 25 mm

Weight transmitter 55 g

(including battery)

Dimensions receiver (HxDxW) 80 x 195 x 35 mm

Weight receiver 450 g

(including batteries)Receiver antenna 190 mm

Package type & dimensions Rugged case, explorer,434x415 x 149 mm

Package weight 5.5 Kg



CONTACT INFORMATION

If you have any questions and inquires about

products and company write to us and we will get back to you as soon as possible.

We welcome your feedback.

Looking forward to hearing from you!

SUNTRILL UAB

Tel:+370 5 275 6430, Fax:+ 370 5 270 5102Justinishkiu 64, office 1, Vilnius, LT- 05239 Lithuania

e-mail:[email protected]; www.suntrill.com

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