VTech IS7121 Installation Guide

11
If you already have a wired doorbell
installed, see Install the doorbell with an
existing wired doorbell from pages 14 to
16 to install your new IS7121 doorbell unit.
Push
Push
Seal tightly
Wire with
red end
Wire with
black end
Screws
Metallic
plate
Metallic
plate
7
Install the doorbell
Loosen the screws and the metallic plates, then slide the
metal part of the wires underneath the metallic plates as
shown. Twist the screws to secure.
1.
Push the doorbell gently onto the wall mount until they are
sealed tightly.
This doorbell meets the IPX4 waterproof standard. Make
sure the doorbell is tightly sealed with its wall mount cover in
order to maintain its waterproof ability.
2.

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