Guardian Technologies HR71 User Manual
Guardian Telecom Inc.
Installation and Operation
Model HR71
Page 3
Overview
HR 71 Industrial Ringdown/Autodialer Telephone
The HR71 is a rugged industrial telephone designed to provide safe, reliable, point to point
communication in harsh environments such as refineries, mills, plants, warehouses or areas with
high humidity.
The HR71 Telephone may be supplied with an optional Auto Dialer or dialing may be programmed
through a PABX. If an Auto Dialer is ordered with the HR71 refer to the manual for the Auto Dialer
for instructions on programming and for compliances.
communication in harsh environments such as refineries, mills, plants, warehouses or areas with
high humidity.
The HR71 Telephone may be supplied with an optional Auto Dialer or dialing may be programmed
through a PABX. If an Auto Dialer is ordered with the HR71 refer to the manual for the Auto Dialer
for instructions on programming and for compliances.
Features
Enclosure
• 16 AWG steel, zinc chromate plated and powder coated
• 16 AWG steel, zinc chromate plated and powder coated
Epoxy Resin Coating
• encapsulates all parts on main circuit board
• encapsulates all parts on main circuit board
• resistant to corrosive agents (eg. H
2
S, SO
2
, and NH
3
), and high
humidity
Magnetic Reed Hook Switch
• no moving parts
• no moving parts
Surge Arrestor
• prevents damage to the electronic circuits in the event of a high
• prevents damage to the electronic circuits in the event of a high
voltage spike on telephone line
Noise Reducing Microphone
• allows a high level of intelligibility in locations with high background
• allows a high level of intelligibility in locations with high background
noise.
Heavy Duty Handset Cord
• withstands abusive use
• withstands abusive use
Hearing-Aid Compatibility
• compatible with inductively coupled hearing-aid devices
• compatible with inductively coupled hearing-aid devices