AT&T DECT TL91278 - Manual (Page 87)

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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
(AC voltage, 60Hz)
96 — 129 Vrms
Telephone base voltage
(AC adapter output)
6VDC @400mA
Handset voltage 2.4 — 3.2 VDC
Charger voltage
(AC adapter output)
6VAC @300mA
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.