AT&T TL91278, TL9178, TL91378, TL91178 Technical specifications, Operation, Operating time

Appendix J

Technical specifications

RF frequency band	1921.536 MHz — 1928.448 MHz
Channels	5
Operating temperature	32°F — 122°F
	0°C — 50°C
Telephone base voltage	96 — 129 Vrms
(AC voltage, 60Hz)
Telephone base voltage	6VDC @400mA
(AC adapter output)
Handset voltage	2.4 — 3.2 VDC
Charger voltage	6VAC @300mA
(AC adapter output)
Replacement battery	2.4V 750mAH
Operation		Operating time*
Talk time (handset)		Up to nine hours
Talk time (speakerphone)		Up to two hours
Standby		Up to five days

* Operating times will vary depending on your actual use and the age of the battery.

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