Technical Specifications - AT&T 993 User Manual

Two-line speakerphone with caller id/call waiting
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Appendix

Technical specifications

Operating temperature:
32°F — 22°F
(0°C — 50°C)
Power adapter input:
AC 20V 60Hz
Power adapter output:
AC 9V, 300mA
Backup battery:
Alkaline 9V
Headset jack:
2.5mm, 32-50 ohm
73

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