AT&T TL7610 - Manual (Page 69)

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Appendix C
Operating range
This cordless headset operates within the maximum power
allowed by the Federal Communications Commission (FCC). Even
so, this headset and headset base can communicate over only
a certain distance — which can vary with the locations of the
headset base and headset, the weather, and the construction of
your home or office.
Extended range and clarity
The TL7610/TL7611 are fully cordless DECT 6.0 headsets offering
a range of up to 500 ft. Sound level protection technology
conforms to the current regulations and is used to filter out the
loud and high-pitched noises.
RF frequency band 1921.536 MHz — 1928.448 MHz
Channels 5
Operating temperature 32°F — 122°F
0°C — 50°C
Headset base voltage
(AC voltage, 60Hz)
96 — 127 Vrms
Headset base voltage
(AC adapter output)
6VDC @300mA
Headset voltage 3.2 — 4.2 VDC
Replacement battery 3.7V 240mAH
Technical specifications