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Guardian Telecom Inc.
Installation and Operation
Model HR70
Page 3
Overview
HR70 Industrial Telephone
The HR70 Telephone is designed to provide safe, reliable communication in areas prone to high
humidity, chemical vapors, dust and physical abuse.
Features
Enclosure
• 16 AWG steel, zinc dichromate plated and powder coated
Membrane Keypad
• weather tight
• 10 number memory
• Redial - last number (31 digits)
• Recall - obtains dial tone without hanging up handset
• Flash - 600ms timed loop break
• Pause - 3 second pause in programming
• Mute - disables handset microphone
• Softer/Louder – receiver volume controls
Encapsulated Circuitry
• circuit boards are resistant to corrosive agents (e.g. H
2
S, SO
2
and
NH
3
) and environments with high humidity
Magnetic Reed Hook Switch
• no moving parts
Surge Arrestor
• protects the user in the event of a high voltage spike on the telephone
line
Fuse
• prevents damage to the electronic circuits in the event of a high
voltage spike on the telephone line
Noise Reducing Microphone
• allows a high level of intelligibility in locations with high background
noise
Tone (DTMF) Operation
• factory set to tone (DTMF) dialing
• pulse dialing can be ordered or configured in the field
Heavy Duty Handset Cord
• withstands severe use
Hearing-Aid Compatible
• compatible with inductively coupled hearing-aid devices