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Changing the battery
• The thermometer contains small parts (battery, etc.) which
could be swallowed by children. For this reason, do not
1. Change the battery when the battery symbol flashes in the
leave the unit in the hands of children unsupervised.
display:
• Protect the unit against high temperatures and direct sun-
light.
Should not be mistaken for the full control display when
• On no account should you open or make alterations to the
turning on the thermometer.
device (except when changing the battery). This is a med-
ical product.
2. To do so, pull off the battery compartment cover towards
• Clean the thermometer before and after each use, see
the rear.
"Maintaining the unit".
3. Carefully pull the battery holder about 1 cm out of the cas-
ing.
Unit description
4. Do not use a metal object to push the battery out of its
Battery compartment cover
holder.
On/Off button
5. Insert a new battery (type LR41 or SR41, 1.55 V), with the +
sign towards the top.
6. Push the battery holder back into the casing and replace
Display
the battery compartment cover. Take care not to damage or
misalign the seal when doing this.
Measuring the wake-up temperature
Take the measurement wherever possible at roughly the same
Flexible sensor tip
time of day, immediately after waking up, but before getting
up.
Before measuring, you should have slept for at least 5 hours.
If you have had an insufficient period of sleep, skip the meas-
urement and do not enter a measured value.
Prior to measurement do not eat and avoid physical exertion.
Sensor
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You can take the measurement orally, rectally or vaginally, but
Please always wait until the measurement has finished before
removing the thermometer from the point of measurement.
you should then stick to the point of measurement you have
This can take a few minutes in some cases.
chosen. Measuring under the arm (axillary) produces inaccu-
The determined measured value remains stored until the next
rate results. It is therefore unsuitable for measuring the basal
measurement.
body temperature. We recommend that you take the meas-
The unit switches itself off approx. 8-10 minutes after the
urement under your tongue with your mouth closed.
measurement has finished. You can also switch off the ther-
To switch the device on, press the On/Off button. A short beep
mometer yourself before this by pressing the On/Off button.
sound will signal "Thermometer on". At the same time, a
visual display of the full controls will appear. All display ele-
Evaluating the measured data
ments should become visible.
Enter the measured values in a cyclotest® chart. Use a new
chart for each cycle. Start the entries on the first day of your
regular period (= 1st cycle day). Regular periods differ from
intermenstrual bleeding in that they are accompanied by typ-
The measured value of the last measurement is displayed:
ical drop in temperature.
Also make a note on the chart of special factors and influences
which could alter the temperature, for example:
Then an internal test value of 37.00 °C (± 0.02 °C) appears.
Sexual intercourse (V), fever (E), taking of medication/drugs
The thermometer switches into measurement mode.
(M) or sleeping medication (S), insufficient sleep (wS),
Place the sensor tip in one of the two heat pockets under your
change of climate (K), consumption of alcohol (A), emotional/
tongue to the left or right of the root of the tongue. The sen-
mental strain (B) or physical exertion (kA).
sor must make good contact with the tissue.
Also make a note on the chart of bleeding and mucus qual-
Close your mouth and breathe easily through your nose so
ity: regular period (R), heavy, moderate, light intermenstrual
that the measurement result is not compromised by inhaled
bleeding (sZ, mZ, gZ), spotting (SB) and if possible also the
air.
appearance and nature of the cervical mucus.
The flashing "°C" in the display indicates that the new meas-
Carefully kept charts are important diagnostic indicators and
urement has started.
should always be taken with you to doctor's appointments.
The unit confirms that the measurement has been successful
This is recommended particularly in the event of cycle irreg-
with a repeated beep and indicates the measured tempera-
ularities.
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ture in the display.
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Ovulation which occurs roughly in the middle of the cycle is
Temperature method
definitive for pregnancy planning and for contraception. The
The "strict form" of the temperature method (sexual inter-
basal body temperature increases 1-2 days after ovulation by
course only from the third day of the temperature rise until
0.2 – 0.5 °C. A drop in temperature of approx. 0.1 °C is fre-
the next regular period) is almost as reliable as the pill - by
entirely natural means, without taking medication or using
quently to be observed directly before the day of ovulation.
mechanical (non-hormonal) measures.
The increased basal body temperature remains at roughly the
same level until the next regular period and then drops again
Even the "extended form" of the temperature method is still
(see specimen curve).
just as reliable as mechanical (non-hormonal) contracep-
Significant deviations from this sequence indicate cycle irreg-
tives. Here you can also have sexual intercourse in the period
from the start of the regular period up to six days before the
ularities or pregnancy.
day of the temperature rise. In exact terms: From the earli-
est day of the temperature rise which you determine from at
Application for natural family planning
least 6 successive cycles, count back 6 days.
An egg remains capable of being fertilised for just a few hours
after ovulation, sperm remains capable of fertilising an egg
Symptothermal method
for 2-4 days. Fertilisation of the egg (conception) can there-
Here the temperature method is combined with observing a
fore only occur on the last 5 days before the temperature in-
"symptom", the mucus at the neck of the uterus.
crease described above.
A regular period is usually followed by a phase of infertile,
Determine the fluctuation of your ovulation day over several
"dry" days in which no so-called cervical mucus can be ob-
cycles as exactly as possible – this will provide you with a good
served. A few days prior to the fertile phase the mucus causes
picture of when you can expect your fertile phase. If the tem-
a sticky-moist feeling at the entry to the vagina. Spinnbarkeit
perature remains high after the rise for longer than 18 days,
(stretchability), clearness and strong fluidity are character-
you are in all probability pregnant.
istic.
If you now make these observations 3-4 days before the tem-
perature rise, you can be certain that this temperature rise
has occurred in response to ovulation. To this end, take a look
at your cervical mucus once a day during the corresponding
time period.
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