Guardian Technologies HR70 ユーザーズマニュアル

 

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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. 

 
 

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