Sony BabyCall NTM-910DUAL User Manual

Sound-sensor nursery monitor, Ntm-910dual, Before you begin

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Before You Begin

Thank you for choosing the Sony Sound-Sensor Nursery

Monitor! Before operating the Sound-Sensor Nursery

Monitor, please read these instructions thoroughly and

retain them for future reference.


 Up to 27 channels for maximized reception.

 Voice Activation eliminates most background noise for

a more peaceful sleep.

 5 indicators for monitoring sound levels.


indicators allow you to know the operating condition

of the receiver.

 Water-resistance allows operating the receiver in slight

moisture areas such as kitchen or bathroom.

 Operating on rechargeable battery pack.


Safety Precautions

 Operate the transmitter and receiver on 9 V DC. To

operate them from a house current, use only the

supplied AC adaptor; do not use any other type.

For battery operation of the receiver, use one

rechargeable battery pack BP-TR10.

 Should any solid object or liquid fall into the unit,

disconnect the AC adaptor and remove the battery, and

have the unit checked by a qualified personnel before

operating it any further.

 If you are not going to use the system for a long time:

– Disconnect both transmitter and receiver from the

wall outlet by pulling out AC adaptors.

– Remove the battery out of the receiver to avoid

damage from battery leakage.

If you have any questions or problems concerning your

system, please consult your nearest Sony dealer.

Precautions on Usage

This product cannot replace responsible adult

supervision of a child. It is designed to assist adults

in child supervision. Do not use it for medical

monitoring of a sick baby or child.

 The transmitter detects normal sound levels within a

range of 2 to 3 meters (6 to 10 feet) from a child. If the

child moves outside of this range, it may not be able to

detect sounds from him or her.

 It is essential that you check the operating range and

condition of the Sound-Sensor Nursery Monitor on

initial installation, and on a regular basis after that.

 Stay close to the receiver in order to hear normal

sounds from it. Check the volume regularly to ensure

that it is set high enough.

Recharge the rechargeable battery pack in the receiver

or operate it on house current as soon as the POWER/

BATT indicator starts flashing and the receiver sounds

a beep.

 The receiver can be affected by other devices in or near

your home that may interfere with the signals sent by

the transmitter. Such interference can be caused by TV

sets, cordless phones, vacuum cleaners, car ignitions,

and other electrical devices. You should test the

receiver when you expect such devices to be in

operation while you are using the Sound-Sensor

Nursery Monitor.

 The signal from the transmitter can be received by

another receiver, as it uses a public air wave.

Cautions on Water-resistance (for

the receiver only)

This unit is designed so that it can be used with slight

exposure to water, rain, snow and other forms of

moisture, but there are several points on which caution

should be observed.

 Do not allow it to come into contact with large

amounts of water.

 Do not immerse it in water.

 If water should get on it or if it should fall into water,

take it out immediately and wipe it off with a dry cloth.

To prevent the battery from corroding, wipe out the

interior of the battery compartment as follows:

– Open or close the battery compartment with dry

hands in a place without exposure to any water.

– Wipe off the battery and the inside of the battery

compartment. Give special attention to the contacts

so that no water remains on them.


Should any problem persist after you have made the

following checks, consult your nearest Sony dealer.

No sound (even with both units turned on)

 AC adaptor is disconnected from the wall outlet.

 Battery is used up.

 Receiver is too far from the transmitter.

CH selectors of both transmitter and receiver are not

on the same settings.

Too much noise

 Weak battery.

 Receiver is too far from the transmitter.

 Interference from another electrical appliance.

Turn off the appliance, or move it further from the


Weak reception

 Receiver is too far from the transmitter.

MONITOR indicator is not lit.

 Weak battery.

 Receiver is too far from the transmitter.

Buzzing, interference

 Another transmitter interfering.

Set the CH selectors of both the transmitter and

receiver to another setting.

Shrill noise

 Receiver is too close to the transmitter.

 Volume is too high.

Alarm continues to sound although the distance

between the transmitter and the receiver becomes

within operating range.

 Transmitter is not set to ON.

CH selectors of both the transmitter and receiver are

not on the same settings.


Frequency range: 902.200 - 904.900 MHz

Number of channels: 27 channels

Modulation system: FM


Circuitry: Crystal-controlled PLL circuit

Power requirement:

AC adaptor (DC IN 9 V jack):

120 V AC, 60 Hz


101.8 Ч 99.5 Ч 63 mm (w/h/d) (4




Ч 4 Ч





inches) not incl. projecting parts and antenna

101.8 Ч 140.5 Ч 63 mm (w/h/d) (4




Ч 5









inches) incl. projecting parts and antenna

Mass: Approx. 128.2 g (4.5 oz)


Circuitry: Single superheterodyne

Power requirement:

AC adaptor (DC IN 9 V jack):

120 V AC, 60 Hz

2.4 V DC, Rechargeable battery pack


Audio power output:

110 mW (using the supplied AC adaptor)

40 mW (using 2.4 V DC)

Speaker: 57 mm dia., 16 Ω


94 Ч 109 Ч 59 mm (w/h/d) (3




Ч 4




Ч 2





not incl. projecting parts and antenna

94 Ч 157 Ч 59 mm (w/h/d) (3




Ч 6




Ч 2





incl. projecting parts and antenna


Approx. 184.3 g (6.5 oz)

Approx. 228.8 g (8.1 oz) incl. a rechargeable battery


Supplied accessories:

AC adaptor (3)

Rechargeable battery pack BP-TR10 (2)

Design and specifications are subject to change without



To reduce the risk of fire or electric

shock, do not expose this apparatus

to rain or moisture.



To prevent cord entanglement and strangulation:

 Do not place transmitter or cord within reach of


 Do not place transmitter or cord in, or attach to, crib

or playpen.

 Never use extension cords with AC adaptors. Only use

AC adaptors provided.

You are cautioned that any changes or modifications

not expressly approved in this manual could void

your authority to operate this equipment.


This equipment has been tested and found to comply

with the limits for a Class B digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful

interference in a residential installation. This equipment

generates, uses and can radiate radio frequency energy

and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio

communications. However, there is no guarantee that

interference will not occur in a particular installation. If

this equipment does cause harmful interference to radio

or television reception, which can be determined by

turning the equipment off and on, the user is encouraged

to try to correct the interference by one or more of the

following measures:

– Reorient or relocate the receiving antenna.

– Increase the separation between the equipment and


– Connect the equipment into an outlet on a circuit

different from that to which the receiver is connected.

– Consult the dealer or an experienced radio/TV

technician for help.

If you have any questions about this product, you may


Sony Customer Information Services Center 1-800-222-

7669 or

Declaration of Conformity

Trade Name:



NTM-910 (Receiver unit)

Responsible Party:

Sony Electronics Inc.


16530 Via Esprillo, San

Diego, CA 92127 USA

Telephone Number: 858-942-2230

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference,

and (2) this device must accept any interference

received, including interference that may cause

undesired operation.


Nickel Metal Hydride batteries

are recyclable.

You can help preserve our

environment by returning your

used rechargeable batteries to the collection and

recycling location nearest you.
For more information regarding recycling of

rechargeable batteries, call toll free 1-800-822-8837, or

Caution: Do not handle damaged or leaking Nickel

Metal Hydride batteries.

For customers who purchased this product in the USA

Please register this product on line at .

Proper registration will enable us to send you periodic mailings about new products, services, and other important

announcements. Registering your product will also allow us to contact you in the unlikely event that the product

needs adjustment or modification. Thank you.


© 2007 Sony Corporation Printed in China


Nursery Monitor

Operating Instructions


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