TRI-GARD 555LS/557LS SIGNATURE SERIES™
audio glassbreak detectors employ state-of-the-art Advanced
Signature Analysis
™
algorithms to sample four bands of audio
instead of one or two like most other detectors. Digital Signal
Processing (DSP) is used to continuously sample and analyze
the sound. Within milliseconds after an audio “event” begins,
the microprocessor starts crunching data. Approximately 1200
comparisons and decisions are made before an event is reject-
ed or confirmed about 0.3 seconds later. Eight glassbreak sig-
nature models and four false alarm models, stored in memory,
are referenced during the confirmation process. The result of
this high-tech performance is more accurate glassbreak detec-
tion and improved false alarm rejection in tough environments.
TRI-GARD 555LS/557LS FEATURES
• Specified for plate, wired, tempered & laminated glass
• Microprocessor-based for better discrimination
• Advanced Signature Analysis™
• Signature Supervision
• Omnidirectional sensitivity
• Automatic sensitivity adjustments
TRI-GARD 555LS/557LS APPLICATIONS
• Glassbreak protection in residential, commercial
and industrial areas
• Protects plate, wired, tempered & laminated glass
• Omni direction detection to protect multiple windows
• Areas with closed drapes or blinds will reduce range.
Test with 517 tester for specific range
• Wall or ceiling mount installations
SPECIFICATIONS
S
ENSING
: Audio/air, open space (enclosed area)
R
ANGE
: 25’ for plate, wired, tempered & 20’ for laminated
glass. These ranges are for 1’ X 1’ minimum glass size. For
glass size down to 6” X 10” the range would be reduced by
1/2.
G
LASS
S
IZE
: Above stated range is for 1’ X 1’
T
HICKNESS
: Plate-
3
¼
32
" to
1
¼
2
"
Tempered–
1
¼
8
" to
1
¼
2
"
Wired–
1
¼
4
" to
1
¼
2
"
Laminated–
1
¼
4
" to
1
¼
2
"
S
ENSING
F
IELD
: Omni-directional
S
ENSOR
: Electret condenser (F.E.T. pre-amp)
O
PERATING
V
OLTAGE
: 10–16 VDC filtered and regulated
P
OWER
C
ONSUMPTION
: 30 ma @13.6 VDC normal, 40 ma @
16 VDC.
O
PERATING
T
EMPERATURE
: 14° to 120° F (-10° to 49° C)
S
TORAGE
T
EMPERATURE
: -13° to 185° F (-25° to 85° C)
R
ELAY
A
CTIVATION
T
IME
: 3 seconds
A
LARM
LED
: Latch or auto reset
A
LARM
R
ELAY
: SPDT (Form-C)- contacts .1Amp @30 VAC/24
VDC Relay is energized upon power up (C & NC are closed)
T
AMPER
C
IRCUIT
: Normally closed switch-contacts 50
milliamps @ 30 VAC/24 VDC.
V
OLTAGE
M
ONITOR
: Low or no voltage causes alarm relay to
open. Low voltage <10 VDC causes red LED to flash slowly
I
NSTALLATION
: Hardwire 6 wires including 2 for tamper
Testing
: Follow instructions & test once a year
M
OUNTING
: Surface– screw and anchors included
C
OLOR
: White or Cabin Brown
S
IZE
: 3" x 3" x
3
¼
4
"
TRI-GARD
555LS/557LS
Signature Series
™
A u d i o G l a s s b r e a k D e t e c t o r s
NOTE 1:
The use of mini-blinds, shades, drapes* and sun film* can
reduce the range of the detector by 50%. Since room acoustics and win-
dow coverings can vary considerably, all detector installations should be
checked with the 517 tester.
* Not for sound deadening drapes
* Tested w/ 3M sun film #SH2CLAR (3M is a trademark of 3M Company)
555LS
557LS
