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Technical Specifications - AT&T 1856 User Manual

Speakerphone/ answering system with caller id/call waiting
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Appendix

Technical specifications

Operation temperature
Telephone voltage
(AC adapter input)
Telephone voltage
(AC adapter output)
44
32°F — 122°F
0°C — 50°C
AC120V 60Hz 5W
AC6V @350mA
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