VTech Telecommunications Ltd 80-0425-01 Benutzerhandbuch

You can choose to hear sounds from the baby 

unit all the time, or to hear sounds that exceed 

a certain level. You can use the parent unit to 

adjust the microphone sensitivity of your baby 

unit. The higher the sensitivity level, the more 

sensitive the baby unit is in detecting sounds 

for transmitting to the parent unit. The sound 

sensitivity is preset to LEVEL 5. 
Sound sensitivity table for reference

 

High sensitivity level
The parent unit speaker is 
constantly on, and you will 
hear all sounds (including 
background noises) from 
your baby’s room.

 

 

Medium high 
sensitivity level
The parent unit speaker 
turns on for soft babbling 
and louder sounds from 
your baby. It remains 
quiet when your baby 
sleeps soundly.

 

  

Medium sensitivity level
The parent unit speaker 
turns on for loud babbling 
and louder sounds from 
your baby. It remains quiet 
when your baby makes 
soft sounds.

   

  

Medium low sensitivity 
level
The parent unit speaker 
turns on for crying and 
louder sounds from your 
baby. It remains quiet 
when your baby makes 
soft sounds.

       

Low sensitivity level
The parent unit speaker 
turns on for loud crying or 
screeching sounds from 
your baby. It remains quiet 
when your baby makes 
soft sounds.

Press MENU when the parent unit is not  

in use.
Press OK to select SENSITIVITY.
Press   or   to choose the sensitivity level.
Press OK to confirm your selection. The 

screen displays SAVED and you hear a 

confirmation tone.

1.

2.
3.
4.

Install the battery as shown below.

NOTE
Make sure the supplied rechargeable battery with 
the label THIS SIDE UP facing up.

•

BC

The parent unit runs on rechargeable battery or 
AC power. To continuously monitor your baby, 
make sure you use both battery and AC power 
at the same time. With the battery alone, the 
parent unit can cordlessly run for a short time 
only.

NOTES
Use only the battery supplied with this product.
If the parent unit will not be used for a long time, 
disconnect and remove the battery to prevent 
possible leakage.
Without AC power charging, the battery gradually 
discharges, even when the parent unit is switched 
off.

•
•

•

To replace the battery, unplug the battery 
connector from the socket, and then pull the 
battery out of the battery compartment. Follow 
the steps above to install the battery.

Once you have

 connected the parent unit or 

installed its battery, 

it powers on automatically

. 

The battery icon indicates the battery status 
(see the following table).

NOTES

The parent unit battery is fully charged after 11 
hours of continuous charging.

It takes longer to charge the battery when the 
parent unit is turned on. To shorten the charging 
time, turn the parent unit off while charging.
The standby time varies depending on the 
sensitivity level you set, your actual use and the 
age of the battery.

The battery 
icon is off.

No battery is 
installed. The 
parent unit 
can be used 
only when it is 
connected to 
AC power.

Install the 
parent unit 
battery. 
Charge 
without 
interruption 
(at least 30 
minutes).

and 

 

flash 

on the 

screen. 

The 

 light 

flashes.

The battery 
has very little 
charge and 
may be used 
for only a short 
time.

Charge 
without 
interruption 
(about 30 
minutes).

The battery 
icon 
becomes 
solid  .

The battery is 
fully charged.

To keep 
the battery 
charged, 
connect it to 
AC power 
when not in 
use.

•

•

•

NOTE

This baby monitor is intended as an aid. It is not a 
substitute for proper adult supervision, and should 
not be used as such.

You may test the baby monitor before initial use, 
and at regular times thereafter. 

CAUTION

For hearing protection, make sure the 
parent unit is more than 2 meters (6.5 feet) 
away from both baby units. If you hear any 
high-pitched noise, move the parent unit 
further until the noise stops. You can also 
press

 

 on the parent unit to lower or 

mute the noise.

Make sure your baby unit and parent unit 
are on. 

 

  •   If no connection between them, the parent unit  
      displays NOT LINKED and 

 

flashes.

 

  •   Move the parent unit closer to the baby unit to  
      re-link.

2.  Speak towards the microphone of the baby 

unit. 

 

  •   You will hear the sound at the parent unit, and  
      see the visual sound indicators light up.

TIP

Increase the speaker volume of the parent unit if 
you cannot hear the sounds transmitted from the 
baby units. 

•

•

1.

•

1

Light on when the baby unit is turned 

on.

•

2

Press and hold to power on or off.

•

3

 Lullaby
Press to start playing the lullaby.
Press again to skip to the next lullaby.

•
•

4

Press to decrease the talkback volume 

transmitted from your parent unit.

•

5

On when night light is turned on 

manually or triggered by sound.
Off when night light is turned off 

manually or after 15 minutes of 

silence.

•

•

6

Press to increase the talkback volume 

transmitted from your parent unit.

•

7

 Lullaby
Press to start playing the lullaby.
Press again to stop playing the 

lullaby.

•
•

8

Press to turn the night light on or off.

•

9

10 Power jack
11

12 Temperature sensor

1

2

Light on when the parent unit is 

powered on.
Light flashes when there is no link 

between baby unit and parent unit or 

parent unit is out of range from the 

baby unit.

•

•

3

Press and hold to power on or off.
While in a menu, press to return to idle 

screen. 

•
•

4

Press to decrease the speaker volume.
While in a menu, press to scroll down.   

•
•

5

6

The visual sound indicator has two 

functions. One is to show the sound level 

detected by the baby unit. The other 

one is to show the volume level during 

speaker volume setting.
Sound level detected by the baby unit

   One to three green 

lights indicate a moderate sound level 

detected by the baby unit.

   Additional red 

lights indicate a higher sound level 

detected by the baby unit (e.g. baby 

crying loudly).

   One to three green 

lights indicate Level 1 to Level 3 of the 

speaker volume setting.

   Additional red 

lights indicate Level 4 to Level 5 of 

the speaker volume setting.

•

•

•

•

7

 Battery level indicator

Light on when the battery is being 

charged.
Light flashes when the battery is low 

and needs charging.
Light off when no battery is installed. 

•

•

•

8

Press to increase the speaker volume.
While in a menu, press to scroll up.   

•
•

9

While in a menu, press to return to the 

previous screen.
Press to return to idle screen.

•

•

10 Microphone
11 MENU/OK

Press to enter the menu while idle.

While in a menu, press to choose an 

item, or save a setting. 

•

•

12 Power jack
13 Belt clip
14 Battery compartment cover
15 TALK

Press and hold to talk to the baby unit; 

release to stop talking.
While in a menu, press to return to 

idle screen.

•

•

1 set for DM521; 

2 sets for DM521-2

NOTES
Use only the power adapters supplied with this 
product.
Make sure the electrical outlets are not controlled 
by wall switches.
The power adapters are intended to be correctly 
oriented in a vertical or floor mount position. The 
prongs are not designed to hold the plug in place if 
it is plugged into a ceiling, under-the-table or cabinet 
outlet.
Make sure the parent unit, the baby unit and the 
power adapter cords are out of reach of children.

•

•

•

•

 displays when strong signal 

strength is detected between the 
baby unit and the parent unit.

 displays when good signal 

strength is detected between the 
baby unit and the parent unit.

 displays when moderate signal 

strength is detected between the 
baby unit and the parent unit.

 displays when the weak signal 

strength is detected between the 
baby unit and the parent unit.

 flashes when the link between the 

baby unit and the parent unit is lost.

•

•

•

•

•

Displays when the lullaby is playing 

•

Displays when the sound alert of the 
parent unit is turned on.
Flashes when there are loud sounds 
detected from the baby unit and the 
parent unit is in mute.

•

•

Displays when the volume is turned 
off.

•

Displays when the night light is 

•

 animates when 

the battery is charging.

 displays solid when the battery is 

fully charged.

 flashes when the battery is 

charged with AC adaptor, or charging 
failure.

 flashes when the battery is in low 

level and needs charging.
No battery icon displays when there 
is no battery installed.

•

•

•

•

•

Press and hold

 

 to power on the baby unit. 

The power indicator 

 turns on

.

Press and hold   again to power off the 
baby unit. The power indicator   turns off.

Press and hold   to power on the parent 
unit. The power indicator 

 and t

he screen 

turns on.
Press and hold   again to power off the 
parent unit. The power indicator 

 and 

the 

screen turns off.

NOTE
The parent unit powers on automatically once 

it is connected to AC power or battery installed. 

The baby unit also powers on automatically once 

connected to AC power. 

Press   or   on the baby unit at any time.

You can adjust the speaker volume from 
VOLUME 1 to

to VOLUME 5, or turn it off. The 

speaker volume is preset to VOLUME 3.

Press   or   when the parent unit is not in use.

When the speaker volume is set to off, the 
screen displays   .

•

•

•

•

•

•

•

NOTE
The sound alert setting on each parent unit is 

independent.

You can turn on or off the night light by pressing 

the 

 button manually on the baby unit. You 

can also use the parent unit to set the night light 

on the baby unit to automatically turn on when 

the baby unit detects a sound.
When the night light auto-on setting is turned 

on, 

displays. The default setting is preset to 

OFF.

Press MENU when the parent unit is not in 

use.
Press   or   to choose NIGHTLIGHT, 

then press OK.
Press OK to select ON? when the current 

night light setting is OFF; or to select OFF? 

when the current night light setting is ON. 

The screen displays SAVED and you hear a 

confirmation tone.

NOTES
To enter the night light menu of the parent unit, 

the baby unit must be turned on.
Night light will automatically turn off after  

15 minutes of silence.

Your baby unit measures the surrounding 

temperature. If the detected temperature falls 

beyond a desired temperature range, the parent 

unit will emit an alert tone, The screen will also 

display HI TEMP or LOW TEMP.
You can change the settings for the temperature 

format and range, or turn on or off the 

temperature alert.

You can set the temperature format to celsius 

(

o

C) or Fahrenheit (

o

F).

Press MENU when the parent unit is not in 

use.
Press   or   to choose TEMPERATURE, 

then press OK.
Press OK to select FORMAT.
Press OK to select CELSIUS? when 

the current temperature format is 

FAHRENHEIT; or to select FAHRENHEIT? 

when the current temperature format is 

CELSIUS. The screen displays SAVED and 

you hear a confirmation tone.

•

1.

2.

3.

•

•

1.

2.

3.
4.

NOTE
To enter the sensitivity menu of the parent unit, 

the baby unit must be turned on.

You can select a language (English, French or 

Spanish) to be used in all screen displays. The 

language is preset to ENGLISH.

Press MENU when the parent unit is not in 

use.
Press   or   to choose LANGUAGE, then 

press OK.
Press   or   to choose ENGLISH, 

FRANCAIS or ESPANOL.
Press OK to confirm your selection. The 

screen displays SAVED and you hear a 

confirmation tone. 

NOTE
The language setting on each parent unit is 

independent.

You can select your desired lullaby to play on 

the baby unit. There are 5 lullabies for you to 

choose from.

Press MENU when the parent unit is not in 

use.
Press   or   to choose LULLABY, then 

press OK.
Press   or   to choose your desired 

lullaby, the press OK.
Press OK to select PLAY when the lullaby 

is not playing, or to select STOP when 

the lullaby is playing. The screen displays 

SAVED and you hear a confirmation tone. 

Sound alert feature works only when the parent 

unit is in mute.
If you turn on the sound alert, the parent unit beeps 

when the baby unit detects sounds which light up 

four sound level indicators on the parent unit.
When the sound alert of the parent unit is turned 

on,   displays. The sound alert is preset to OFF.

Press MENU when the parent unit is not in 

use.
Press   or   to choose SOUND ALERT, 

then press OK.
Press OK to select ON? when the current 

sound alert setting is OFF; or to select 

OFF? when the current sound alert setting 

is ON. The screen displays SAVED and you 

hear a confirmation tone.

•

1.

2.

3.

4.

•

1.

2.

3.

4.

1.

2.

3.

on purchasing your new VTech product.  
Before using this product, please read  
Important safety instructions. 

For support, shopping, and everything new at 
VTech, visit our website at  
www.vtechphones.com.

Registration
Register your product online for 
enhanced warranty support.

Learn about the latest VTech 
products.

CAUTIONS

Keep the baby unit out of the reach of the baby. 
Never place or mount the baby unit inside the 
baby’s crib or playpen.

Place the baby unit more than 1 meter 
(3 feet) away from your baby.

2. 

Place the parent unit more than 2 meters   
(6.5 feet) away from the baby unit.

CAUTION

The default volume of your parent unit is  
VOLUME 3. If you experience high-pitched 
screeching noise from your baby monitor while 
positioning: 
-  Make sure your baby units and parent unit are  
   more than 2 meters (6.5 feet) apart, OR 
-  Turn down the volume of your parent unit.

The operating range of the baby monitor is up to 
300 meters (1,000 feet) outdoors or 50 meters 
(160 feet) indoors. The actual operating range 
may vary depending on the environmental 
conditions, and other interferences such as 
walls, doors, and other obstructions. 

•

1.

•

LOW 
BATTERY

The parent unit uses only the 
rechargeable battery pack and it 
needs to be recharged.

NOT 
LINKED

The link between the parent 
unit and the baby unit is lost 
continuously for over 10 seconds.

SAVED

Your selection has been saved.

SEARCHING

The parent unit is out of range of 
the baby unit, or the baby unit is 
out of power.

TALK

The parent unit is talking to the 
baby unit.

TALKBACK

The other parent unit is talking to 
the baby unit.

HI TEMP

The temperature detected from 
the selected baby unit is above 
the set maximum temperature.

LOW TEMP

The temperature detected from 
the selected baby unit is below 
the set minimum temperature.

o

F

 / 

o

C

The real-time temperature 
detected by the baby unit in 
Celcius (

o

C) or Fahrenheit (

o

F) 

(e.g. 14

C or 57

F).

High 

sensitivity

Low 

sensitivity

i

h

g

c

b

d

f

a

e

k

j

l

At least 1 meter 

(3 feet)

< 3 feet / <

> 3 feet / >

THIS SIDE UP

c

e

g
h
i

b

a

d

f

j

k
l

m

o

n

m

o

n

LINKED

LINKED

THIS SIDE UP

At least 1 meter 

(3 feet)

< 3 feet / <

> 3 feet / >

< 2 meters 
(6.5 feet)   

> 2 meters (6.5 feet)

  > 1 meter 

(3 feet)

At least 1 meter 

(3 feet)

< 3 feet / <

> 3 feet / >

< 2 meters 
(6.5 feet)   

> 2 meters (6.5 feet)

  > 1 meter 

(3 feet)