What are the operating temperature and humidity ranges?
The spectrum Business D3 1 Advanced Voice Modem is designed to operate in temperatures from 0°C to 40°C (32°F to 104°F) with a non-condensing relative humidity range of 5-95%. Ensure environmental conditions meet these standards for optimal performance and longevity. (Page 8)
From the official Spectrum Business D3 1 Advanced Voice Modem manual, page 8
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