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Meridian SL-100 M3900 Meridian Digital Telephones Reference Guide
Environmental, power, and safety
considerations
Purpose
This chapter addresses the following considerations for the M3900
Series Meridian Digital Telephones:
•
temperature and humidity
•
power consumption
•
line engineering
•
accessory environmental information
•
safety and electromagnetic compatibility
Temperature and humidity
Table 30 shows the temperature and humidity for operating and for
storage.
Table 30
Temperature and humidity
Item
Range
Operating temperature
0° to 50°C (32° to 104°F).
Operating relative humidity
5% to 95% (noncondensing). At temperatures above 34°C (93°F)
relative humidity limited to 53 mbar of water vapor pressure.
Storage temperature
-50° to 70°C (-58° to 158°F).
Storage relative humidity
5% to 95% (noncondensing). At temperatures above 34°C (93°F)
relative humidity limited to 53 mbar of water vapor pressure.
Содержание Meridian M3900
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