VTech IS7121 Installation Guide

16
Option 2: Ring the rear doorbell of the existing wired doorbell
and the IS7121 doorbell simultaneously.
Follow instructions in Install the doorbell section to complete
the installation.
5.
If you do not connect domestic power supply nor
install AA batteries to the IS7121 doorbell, only the
existing wired doorbell will ring when being pressed.
View
Right
Angle
Adjustment
View
Left
Rear
Trans Front
Transformer
Chime/buzzer of
wired doorbell
Transformer
Specication are subject to change without notice.
© 2013 VTECH TELECOMMUNICATIONS LTD.
All rights reserved. 12/13. IS7121-X_CA_IG_V4.0
Document order number: 96-009372-040-100

VTech IS7121 Specifications

Frequency and Channels

transmit frequency (handset)	1921.536-1928.448 MHz
transmit frequency (telephone base)	1921.536-1928.448 MHz
transmit frequency (doorbell)	1921.536-1928.448 MHz
channels	5

Display

LCD resolution	128 (RGB) x 160 DOTS
LCD size	1.77 inches
LCD type	TFT PANEL

Power Requirements

handset battery	2.4V Ni-MH battery
doorbell battery	Two 2A batteries
base unit power adapter input	100-120V AC 50/60Hz
base unit power adapter output	6V DC @ 400mA
doorbell unit power adapter input	100-240V AC 50/60Hz
doorbell unit power adapter output	6V DC @ 600mA
charger unit power adapter input	117V AC 50/60Hz
charger unit power adapter output	6V AC @ 300mA

Memory

directory memory locations	50
directory memory digits	up to 30 digits
directory memory characters	15 characters
caller ID log memory locations	50
caller ID log memory digits	up to 24 digits
caller ID log memory characters	15 characters