Guardian Technologies HR71 - Manual (Page 6)

Guardian Telecom Inc.
Installation and Operation
Model HR71
Page 6
Engineering Specifications
E LECTRICAL P ERFORMANCE
A UDIBLE R ANGE F REQUENCY R ESPONSE 300 – 3400 H Z
T RANSMIT O BJECTIVE L OUDNESS R ATING (TOLR) -41 +/- 4 dB
R ECEIVE O BJECTIVE L OUDNESS R ATING (ROLR) T YPICAL 52 +/- 3 dB
S IDE T ONE O BJECTIVE L OUDNESS R ATING (SOLR) T YPICAL 11 +/- 4 dB
R INGER O UTPUT >80 dB
FCC R INGER E QUIVALENCE 0.9B
S ET I MPEDANCE 600 OHMS 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 GAUGE STEEL , ZINC CHROMATE PLATED
AND POWDER COATED
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