Guardian Telecom Inc.
Installation and Operation
SCR-A Series
Page 9
Engineering Specifications
E
LECTRICAL
P
ERFORMANCE
A
UDIBLE
R
ANGE
F
REQUENCY
R
ESPONSE
300
–
3400
H
Z
S
END
L
OUDNESS
R
ATING
(SLR)
dB S
HORT
8
dB
+/-
4
dB
R
ECEIVE
L
OUDNESS
R
ATING
(RLR)
dB S
HORT
-4
dB
+/-
4
dB
S
IDE
T
ONE
M
ASKING
R
ATING
(STMR) >11
dB
R
INGER
O
UTPUT
75
dB
M
AX
R
INGER
E
QUIVALENCE
0.5
S
ET
I
MPEDANCE
600
O
HMS
N
OMINAL
M
AXIMUM
L
OOP
15,000
F
EET
(4,600
M
ETERS
)
OF
22
AWG
C
OPPER
E
LECTRICAL
R
EQUIREMENTS
R
INGER
S
ENSITIVITY
40
–
100
V,
16
–
25
H
Z
L
INE
V
OLTAGE
24
–
56
VDC
L
OOP
C
URRENT
20
-
120
M
A
C
ONNECTION
M
ETHOD
S
URGE
A
RRESTOR
/
T
ERMINAL
B
LOCK
E
NVIRONMENTAL
W
EATHERPROOF
E
NCLOSURE
NEMA
3R
T
EMPERATURE
-40
O
TO
+50
O
C
M
ECHANICAL
H
OOK
S
WITCH
(C
RADLE
S
WITCH
)
L
IFE
>1
000
000
O
PERATIONS
B
ODY
C
ONSTRUCTION
16
G
AUGE
S
TEEL
,
Z
INC
D
ICHROMATE
P
LATED
A
ND
P
OWDER
C
OATED
D
IMENSIONS
9
X
5
X
5.2
INCHES
(229
X
127
X
132
MM
)
N
ET
W
EIGHT
4
LBS
(1.82
KG
)
H
ANDSET
M
ATERIAL
H
IGH
I
MPACT
ABS
M
ICROPHONE
N
OISE
R
EDUCING
E
LECTRET
O
PTIONAL
M
ICROPHONE
N
OISE
C
ANCELING
D
YNAMIC
R
ECEIVER
H
EARING
A
ID
C
OMPATIBLE
S
TANDARD
M
OUNTING
V
ERTICAL
W
ALL
C
ONNECTION
F
ITTINGS
7/8”
D
IAM
.
O
PENING
F
OR
O
WNER SUPPLIED FITTING
H
ARDWARE
M
ATERIAL
S
TAINLESS
S
TEEL
C
OMPLIANCES
ACA N14510
I
NDUSTRY
C
ANADA
1012
6721
A
FCC HQHCAN-22517-TE-E
