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Congratulations

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

Important safety instructions

.

This manual has instructions on how to 
set up and register your new sensor. For 
instructions on sensor settings, see the 
user’s manual that came with your telephone 
base.

Before use

Install batteries to the  
Contact Sensor

NOTES

Use 2 x AAA batteries. Alkaline batteries are 

recommended. If you use other kind of batteries, 

the performance of the sensor varies.
Do not mix old and new batteries. Do not 

mix alkaline, standard (Carbon-Zinc) or 

rechargeable (Ni-Cad, Ni-Mh, etc) batteries.
While you insert the batteries, make sure the 

polarities are correct.
The batteries operate properly under the 

temperature between  0°F (-18°C) and 130°F (55°C).

Press the latch button on the sensor to 

open the battery compartment case.
Insert two AAA alkaline batteries into the 

battery compartment.

Add and register a sensor

You need to register your new 

VC7002A

 Contact 

Sensor to your 

VC7151-102A/VC7151-202A/

VC7151-302A 

telephone system.

To register a Contact Sensor on  

VC7151-102A/VC7151-202A/VC7151-302A 

telephone system:

1.  Press and hold 

/HANDSET LOCATOR

 on 

the telephone base for about 4 seconds until 

the 

IN USE

 light turns on. The telephone 

base shows 

Registering... Please wait

.

2.  Press and hold the pair button (

P

) on 

the Contact Sensor, until the LED light 

flashes red, to enter the registration mode.

The telephone base shows 

Contact X

*

 

registered

 and you hear a beep when the 

registration process completes. The registration 

process takes about 90 seconds to complete.

*

 

  

Contact X

 refers to the sensor’s name.

     

X

 refers to the system-assigned number of the  

     sensor.

1.

2.

VC7002A

Accessory 

  

Wire-Free Contact Sensor 

for use with  

VC7151-102A/ 

VC7151-202A/ 

VC7151-302A

User’s manual

P

Replacing a sensor

If you have purchased this new 

VC7002A

 

accessory sensor to replace an old sensor, 
follow the instructions to deregister your 
old sensor. 

VC7151-102A/VC7151-202A/

VC7151-302A

 telephone system can support 

up to 30 sensors.
To replace a sensor, deregister the registered 
sensor first, and then register this new 
sensor to the telephone base.

To deregister a sensor on VC7151-102A/
VC7151-202A/VC7151-302A series:

1.  Press 

MENU

 when the phone is not in use.

2.  Enter the code 

*33734#

 to access the 

DEREGISTER

 menu.

3.  Scroll to 

Single sensor

, and then press 

SELECT

.

4.  Scroll to the sensor you want to 

deregister, and then press 

SELECT

.

5.  Press 

YES

 to confirm the deregistration.

The telephone base shows

 Contact X is 

deregistered

 and you hear a beep when the 

deregistration process completes.

Check the sensor before use

1.  Separate the sensor unit from the magnet 

unit.

You will receive alerts at your telephone 
base. Refer to the Installation guide or 
User’s manual of your telephone base 
for the sensor alerts.

2.  Combine the sensor unit with the magnet 

unit.

Test the sensor signal strength

You can mount the Contact Sensor on a 

door, window, drawer, cupboard, jewelry box, 

or any object that opens or closes. 
Before mounting the sensor, make sure you test 

if the location you install the sensor is in range 

from your telephone base.

Use adhesive tape to hold the sensor 

temporarily in place.
Mount the sensor to a higher position to 

avoid obstacles or blockages. Depending 

on surroundings and obstructing factors, 

like walls or cabinets, the sensor may not 

transmit to the telephone base properly.

1.  Take the sensor unit and magnet unit to 

the desired mounting location, and use 

adhesive tape to hold them temporarily in 

place at the object and the frame.

2.  Enter the 

Check signal

 mode under the 

Sensor setup

 menu at your handset to 

test the sensor signal strength.

3.  Open the door, window, drawer, cupboard, 

or jewelry box again and check whether a 

good signal is received at your telephone 

base.

NOTES

If 

No signal

 or 

Weak signal

 message is 

displayed in 

Check signal

 mode, mode, or if 

you do not receive an alert when you open the 
door, move the telephone base closer to the 
mounting location or move the sensor closer to 
the telephone base.
Depending on surroundings and obstructing 
factors, like walls or cabinets, the sensor may 
not transmit to the base properly.

After testing the sensor signal strength, mark 

the mounting location on the door, window, 

drawer, cupboard, or jewelry box and its 

respective frame. Then, remove the adhesive 

tape and proceed to the mounting process.

Mount with tape

1.  Attach mounting tape 

onto the 

rectangular area at the rear side of the 
magnet unit,

2.  Stick the magnet unit onto the door.

Mount with tape

You can choose one out of the four spacers 
with suitable height, and then add it to the 
magnet unit.
1.  Push the spacer towards the magnet unit 

until it securely clicks into place.

2.  Attach mounting tape 

C

 onto the 

rectangular area at the rear side of the 
spacer.

3.  Stick the magnet unit onto the door.

Mount the sensor

We recommend you mount the magnet unit 
on a door, window, drawer, cupboard, or 
jewelry box, and mount the sensor unit on its 
respective frame. 
You can use the spacers provided if there is 
a difference in level between the door and 
the frame. The spacer will help to align your 
sensor to the correct height. You can also 
use a spacer if the frame is too narrow or has 
some decorative molding.

NOTES

You can mount the sensor unit with mounting 
tape first, and then use screws later if you 
decide to mount it at that location for long term.
Make sure the mounting surface is clean. A 
textured surface or any imperfections to a 
smooth surface can keep the mounting tape 
from making a strong bond.
Align the magnet unit with sensor unit when 
mounting.
The distance between the sensor unit and 
magnet unit must be 

less than 1 cm (0.4 inch)

.

cc

Without spacer

Mount the magnet unit 

With spacer

> 1 cm 
   (0.4 inch)

> 1 cm 
   (0.4 inch)

> 1 cm 
   (0.4 inch)

< 1 cm 
   (0.4 inch)

What’s in the box

Your product package contains the following items. Save your sales receipt and original 
packaging in the event warranty service is necessary.  

Overview

Sensor overview

1 –  Magnet unit

2 –  Sensor unit

Sensor unit overview

1 –  Latch button

Press to open the battery 
compartment case.

2 –  Back cover
3 –  P (Pair) button 

Press and hold to enter the registration 
mode.

4 –  LED light

Red for a second when the sensor is 
powered on.
Flashes red when the sensor is in the 
registration mode.

5 –  Battery compartment case

P

P

P

P

Sensor unit

Magnet unit

Spacer for 

sensor unit 

(optional)

Double-sided 

mounting tape C

Spacers for magnet 

unit 

(optional)

Large screw x 2  

(for fixing the 

spacer on the 

frame; optional)

Small screw x 2  

(for fixing sensor 

unit’s back cover on 

the spacer; optional)

Double-sided 

mounting 

tape A

Double-sided 

mounting 

tape B

NOTES

The door images in this installation guide are for 
conceptual reference only.

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