AT&T EXPANSION EP5632 - Manual (Page 17)

4
Appendix
Technical specifications
Operating
temperature 0°C to 50°C
(32°F to 22°F)
Power input
voltage 20V AC 60Hz
Handset battery 3.6V 600mAh (NiMH)
Cordless system
operating frequency 5.725 GHz to 5.850 GHz
Telephone operating range
This cordless telephone operates with the maximum power
allowed by the Federal Communications Commission (FCC). Even
so, the handset(s) and telephone base can communicate over
only a certain distance - which can vary with the locations of the
telephone base and handset(s), the weather, the layout, and the
construction of your home or office.
Handset charger
output voltage
9V DC 50mA