Charging The Battery Pack In The Receiver; Charging The Transmitter Battery; Mhz Technology; Pilot References - H+H MBF 3333 Mode D'emploi

14. Charging the battery pack in the receiver

• To charge the battery pack in the receiver connect the
corresponding power pack to socket (15) of the charg-
ing station.
• As soon as you have connected the power pack to
charging station (14) and the receiver is located in the
charging station, the charging tray will flash 5 green/
red. During this period the battery pack is tested.
Charging then commences automatically and this
will be indicated by the red slashing LED (16) on the
charging tray.
• The charging time for a fully drained battery pack, with
the unit switched off, is approximately 12 hours.
• If the receiver is switched on during the charging proc-
ess, the charging time is doubled.
• After charging, you can leave the unit in the charging
station (14). It is technically impossible to over-charge
the battery pack.
• LED (16) automatically switches to green after charg-
ing when the receiver is switched off.
N. B. Do not replace defective battery packs with origi-
nal battery packs. Micro AAA rechargeable batteries/
batteries cannot be charged or inserted in this baby
alarm.
We recommend, particularly for night monitoring, that
you operate both units by means of the power packs
supplied to ensure perfect monitoring. In normal bat-
tery operation the range alarm will be triggered during
the night, according to the charging condition, and will
therefore wake you unnecessarily.

15. Charging the transmitter battery

If you are operating the transmitter with batteries, and
they are drained, you must remove them from the unit
and recharge them in a separate charger, because the
transmitter has no charging function of its own.

16. 40 MHz technology

The device operates within a 40 MHz frequency range,
which excludes interference from CB wireless operators.

17. Pilot references

The remote safety and fault-free nature of this baby
monitoring device is additionally improved with the aid of
an inaudible, proven pilot reference. This pilot reference
has the effect that the receiver only switches on in the
event that noises from the connecting transmitter, e. g.
the baby being monitored, are transferred.
In the unlikely event that you are disrupted by other sig-
nals from the 40 MHz frequency range during trans-
mission, you have the option to switch over to another
channel.

18. Notes on ecological use

• When using batteries, electrical and magnetic fields
can be totally avoided.
• When not using the baby alarm remove the power
packs from the sockets to avoid electrical, magnet-
ic and electromagnetic fields. This will also save you
money because power packs consume current when
even they are merely inserted in a socket.
Notes on high frequency and low frequency fields:
In scientific studies of possible health hazards due to
high and low frequency electromagnetic fields, no clear
cause-effect relationship has so far been demonstrated.
However, some studies have indicated possible health
risks. As a precaution all possible technical means
should be used to minimise exposure to high and low
frequency fields – particularly in the case of babies and
infants considered highly sensitive.

19. Handy hints in case of faults

• If the transmitter or receiver does not function, check
the electricity supply initially.
• If no transfer between transmitter and receiver takes
place, please check the transmission/reception chan-
nels on both devices (a connection is only possible if
they correlate).
• As MBF 3333 operates on a wireless (radio) basis, you
may be able to hear conversations on other wave-
lengths, and, in turn, other listeners may be able to
receive the conversations or noises emitted by your
transmitter. However, MBF 3333 uses transfer fre-
quencies which should ensure that interference of this
nature will not usually occur. If, however, the occa-
sional interference does arise, switch over to the other
channel (frequency).
• Transmitter and receiver should be placed in an up-
right position in order to guarantee optimum transmis-
sion and reception.
• If the receiver is placed too close to the transmitter and
its volume is too high, a whistling tone can be gener-
ated (acoustic feedback). In order to avoid this, the
distance between transmitter and receiver should be
extended.
• Weak batteries or storage batteries can result in the re-
ceiver emitting a crackling noise.
• Please note that no general protection exists against
third party listening within the 40 MHz frequency
range.

20. Important information

• Please use only the original mains adapters to oper-
ate the devices. If one of the mains adapters should
prove faulty, please consult your specialist dealer. If
other mains adapters are used, non-compatible polari-
ties (+/-) and electrical voltages can result in serious
damage to the devices.
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• A faulty mains adapter cannot be repaired. The power
supply lead cannot be replaced, and the mains adapt-
er should be disposed of immediately as a result.
• Avoid pulling on the lead when removing the mains
adapter from the socket and the baby monitoring de-
vice, instead carefully plugging and unplugging them
from the socket or device in order to prevent damaging
the lead.
• Do not place the transmitter in the baby's cot or crawl-
ing pen.
• Always place the devices out of the reach of small chil-
dren.
• If one or both devices are operated with batteries/stor-
age batteries, reception and transmission perform-
ance will not be as good as is the case with mains op-
eration.
• Two mains adapters are enclosed in order to allow you
to plug both transmitter and receiver into their respec-
tive sockets (230 volts/50 Hz).
• We recommend the removal of batteries/storage bat-
teries in the event that the device has not been used
for a long time, as empty batteries/storage batteries
can crystallise and cause damage.

21. Notes on Disposal

Old units, marked with the symbol as illustrated,
may not be disposed of in the household rub-
bish.
Used rechargeable and
non-rechargeable batteries
which are marked with one
of the symbols illustrated may not be disposed of in the
household rubbish.
You must take them to a collection point for old units, old
batteries or special waste (enquire at your local author-
ity) or the dealer from whom you bought them. These
agencies will ensure environmentally friendly disposal.

22. Care and warranty

Before cleaning the unit, disconnect it if necessary
from other components; do not use aggressive clean-
ing agents.
The unit has been carefully checked for defects. If nev-
ertheless you do have cause for complaint, please send
us the unit with your proof of purchase. We offer a 3 year
warranty from date of purchase.
We are not liable for damage arising from incorrect han-
dling, improper use or wear and tear.
We reserve the right to make technical modifications.
We offer no guarantee on rechargeable batteries/battery
packs or batteries!

23. Technical data

Frequencies
Carrier frequency channel 1: 40.670 MHz
Carrier frequency channel 2: 40.690 MHz
High frequency radiation
upper limit measured actual
maximum
value in mW value in mW
transmitting
power (EIRP)
1.25
Low frequency radiation
magnetic flow density*
frequency
range upper limit measured actual
value in nT value in nT
0.025-0.8 KHz 5/f
0.8-3 KHz 6.25
3-150 KHz 6.25
* for a measured distance of 30 cm
Transmitter power consumption
upper limit measured actual
mode
value in W value in W
room
2
monitoring
switched off 1
Range control
Frequency of transmitting signal: 1 x after 55 seconds,
then every 35 seconds
Duration of transmitting signal: < 20 mS
Operating voltage
Transmitter: 6 V DC, with four mignon batteries/re-
chargeable batteries (AA) or with power pack
Receiver: 3.6 V DC, with battery pack or with power pack
(supplied)
Max. range
200 metres according to local conditions
Plug-in power pack
Transmitter: 9 V DC, 200 mA secondary; 100-240 V AC/
50-60 Hz primary
Receiver: 6 V DC, 300 mA secondary; 230 V AC/50 Hz
primary
You can find up-to-date product information on our website

http://www.hartig-helling.de

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