Natural Cycles NCTG3 User manual

Instructions
For Use
NC° THERMOMETER (GEN3)
Model number NCTG3

This thermometer is being imported under FDA
Enforcement Policy for Clinical Electronic Thermometers
During the Coronavirus Disease 2019 Public Health
Emergency. This device meets performance requirements
but is not yet FDA-cleared.

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Contents
Introduction 4
Warnings And Cautions 6
Operating Your Thermometer 9
Maintenance 14

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Introduction
Please read and save these instructions
Thank you for purchasing the NC° Thermometer (Gen3),
Please read these instructions carefully to ensure proper
use and safe operation of your thermometer. If you have
any questions or comments about the thermometer,
contact Customer Support at [e-mail].

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Thermometer key parts
Front
Tip Wand History button Display
Battery hatchNFC zone symbol
Plastic tab
Power button
Back
Settings button
Tip is the part of the thermometer
that is applied to the mouth.

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Package Contents
• NC° Thermometer (Gen3)
• Instructions for Use
• Founder welcome card
The Thermometer is intended to be used on its own or with
iOS/Android smartphones using a dedicated App.
Indications for Use
The NC° Thermometer (Gen3) is used orally for the
intermittent measurement and monitoring of human body
temperature. The device can be used by adults and children
over the age of 5 years old.
Warnings And Cautions
The thermometer may be used by itself or alongside the
Natural Cycles app. See Natural Cycles application IFU for
information regarding use of the app.
• This product is not intended to diagnose or treat any
health problem or disease and should not be used as a
substitute for the consultation and advice of a physician
or other medical professional.
• The thermometer should not be used by children under the
age of 5. The thermometer should only be used by children
over the age of 5 if under the supervision of an adult.
• This thermometer should be held during use; the user
should be seated or lying down during measurements.
• Keep the device away from sources of high levels of power
line magnetic elds to reduce the likelihood of interference.
° The device is suitable for use in all environments

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listed in these instructions for use, including
domestic environments.
° The use of the device may be limited in the
presence of electromagnetic disturbances. This
could result in issues such as error messages
or the failure of the display/device.
• If the thermometer is not likely to be used for some time,
please remove the battery.
• Don’t use near active HF surgical equipment and the RF
shielded room of an ME system for magnetic resonance
imaging, where the intensity of EM disturbances is high.
• Use of this equipment adjacent to or stacked with other
equipment should be avoided because it could result
in improper operation. If such use is necessary, this
equipment and the other equipment should be observed
to verify that they are operating normally.
• Use of accessories, transducers, and cables other than
those specied or provided by the manufacturer of this
equipment could result in increased electromagnetic
emissions or decreased electromagnetic immunity of
this equipment and result in improper operation.
• Portable RF communications equipment (including
peripherals such as antenna cables and external
antennas) should be used no closer than 12 in (30 cm)
to any part of the equipment, including cables specied
by the manufacturer. Otherwise, degradation of the
performance of this equipment could result.
Precautions
• This thermometer uses Bluetooth Low Energy 5.0 and

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Near Field Communication (NFC) to interact with a
dedicated iOS/Android smartphone App.
• Clean the thermometer probe before and after use.
The Thermometer is water resistant, not waterproof.
Never dip the thermometer into water or other liquids.
Do not boil the probe. For cleaning and disinfecting,
please see the Care and Cleaning section.
• Keep out of reach of young children and pets. Do not
bend or bite the probe as this may damage the probe.
• Do not use the thermometer if there are signs of
damage or after a drop/shock that might have caused
damage. If damaged, do not attempt to repair. Please
contact Customer Support at help.naturalcycles.com.
• Parts of the NC° Thermometer (Gen3) are not to be
serviced or maintained while in use with the patient.
• The patient is the intended operator.
• The NC° Thermometer (Gen3) is a continuous
operating device per IEC 60601-1.
• Do not store in direct sunlight or at high temperatures
–see Product Specications section.
• Avoid exercise and drinking hot or cold beverages
before taking a temperature as these activities
may affect the accuracy of the measurement. If the
thermometer has been stored in cold conditions, it
should be left for 30 minutes to stabilize to room
temperature before attempting a measurement.
• The use of heat and cold producing devices, such
as electric heating blankets, heating pads or ice
packs, may impair the performance of the device and
increase the risk of injury to the patient.

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• The manufacturer recommends using a password on
your smartphone.
About Temperature Measurements
Normal oral temperature measurements vary throughout
the day. Level of activity, time of day, beverages, smoking
and other factors may also affect body temperature.
This device is calibrated at the time of manufacturing. No
recalibration is required. Contact Customer Support at
help.naturalcycles.com for any accuracy issues.
Operating Your Thermometer
The Thermometer can either be used by itself or the user
can sync the temperature data to the Natural Cycles app
on their smartphone. Before using the thermometer for the
rst time, pull the plastic tab sticking out of the battery
hatch to activate the battery.
To Set Up Your Thermometer With A New Mobile Device
1. Open iOS/Android Natural Cycles smartphone app for
additional pairing instructions if using thermometer
with smartphone. When the thermometer nds the
smartphone app, a connection is established.
2. Press the settings button on the thermometer. Pressing
the settings button will make the thermometer look for
the app to establish connection for 60 seconds, if the
app is not found, the thermometer shuts itself off.
3. Once the thermometer connects with the phone/device,
you should see the setup complete screen.

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Fahrenheit Celsius Switchable Feature
The thermometer takes measurements in both Fahrenheit
and Celsius. When the thermometer is off, press and hold
the settings button for 5 or more seconds to switch the
measurements from Fahrenheit to Celsius or Celsius to
Fahrenheit. The thermometer screen will conrm the switch
to Fahrenheit or Celsius. You can change thermometer
settings in the app as well.
History Mode
The thermometer includes a recall of the past ten
temperatures taken. Press the history button to see the last
temperature. Continue pressing the history button to see
previous temperatures one at a time up to ten temperatures.
Oral Use
1. Press the power button and then place the thermometer
in your mouth to begin measuring.
2. Place the probe under the tongue as near as possible to

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a heat pocket at the back of the mouth, as noted in the
diagram below.
3. Hold the thermometer in place during the measurement;
do not bite down on the thermometer. The mouth
must remain closed to ensure accurate results. The
measurement should take approximately 40 seconds.
4. When the measurement is complete the thermometer
will provide feedback. The feedback can be light and/
or sound based on user settings. The nal temperature
value will be displayed on the thermometer screen.
5. After a measurement is completed, simply press
the power button to turn the thermometer off or the
thermometer will shut off automatically.
Troubleshooting / Error Codes
Performance may be affected should one or more of the
following occur:
• Operation outside stated temperature and humidity range
• Storage outside stated temperature and humidity range
• Mechanical shock
• User temperature is below ambient temperature
Syncing temperatures with NC App
You can sync the temperature to your phone right after you
measure or later by following the instructions in the app.
There are two ways to sync temperatures with the NC app.
1. After a successful measurement is completed, the
thermometer will advertise the value via NFC or Bluetooth.*
*NFC/Bluetooth depends on user settings which can
be changed in the NC app.

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Error Problem/Cause Solution Temperature too low, try again
Starting temperature value is below 60.8°F (16°C) or nal temperature value is too low, below 89.6°F (32.0°C)
Try measuring the temperature again. Make sure that your environment is in the operating range and that the thermometer is placed as described in the diagram in the ‘Oral Use’ section.
Temperature too high, try again
Starting temperature value is above 104°F (40°C) or nal temperature value is too high, above 107.6°F (42.0°C)
Try measuring the temperature again. Make sure that your environment is in the operating range and that the thermometer is placed as described in the diagram in the ‘Oral Use’ section.
No measurement detected No placement of
thermometer in mouth detected
Try measuring the temperature again. Make sure that the thermometer is placed as described in the diagram in the ‘Oral Use’ section.

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Error Problem/Cause Solution Battery low Battery is depleted Change the battery as
described in the section ‘Replacing The Battery’.
Critically low battery life Battery is depleted Change the battery as
described in the section ‘Replacing The Battery’.
Measuring error User does not take a stable
measurement (moving thermometer around mouth, taking thermometer in and out of mouth).
Wait 10 seconds before trying again. The thermometer screen will display a count- down from 10. When the thermometer reaches 0 the thermometer will return to screen “Start measuring”.

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2. When the thermometer is in History mode it also
advertises unsynced values via NFC or Bluetooth.
Syncing temperatures troubleshooting
If you have issues syncing your temperature from the
thermometer into the app, please visit
help.naturalcycles.com or scan the QR code below
and nd the instructions for different types of devices.
Maintaining Your Thermometer
Care And Cleaning Instructions
Store the thermometer in the provided protective case
when not in use. Do not store the thermometer where it
will be exposed to direct sunlight, dust or humidity. Avoid
extreme temperatures. Do not attempt to disassemble the
thermometer. Clean the thermometer by wiping with 75%
medical alcohol solution or mild soap and water. Do not
submerge in any liquid or autoclave. Wipe the thermometer
with a dry cloth and allow it to air dry.
Replacing The Battery
If the thermometer is low in battery, ‘battery low’ or ‘critically
low battery life’ messages will appear on the thermometer
screen. Open the hatch in the back of the thermometer to
remove the existing battery, and replace it with a new battery.

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Product specications
Battery CR2032
Battery voltage 3V
Battery Life 6 months
Automatic Shut-Off 1 minute
Measurement Range 32-42°C (89.6–107.6°F)
Suggested Time Between
Measurements
10 minutes if device left at rest, 3 minutes
if shaking the device in the air
Measurement Time 40 seconds nominally
Accuracy ± 0.1°C / 0.2°F within measurement range
Operating Temperature 15-40°C (59–104°F)
Storage Temperature -25-50°C (-13–122°F)
Humidity ≤95% R.H.
Atmospheric Pressure 70 kPa to 106 kPa
Display OLED Screen
Display Resolution 0.01ºC or 0.02°F
Dimensions 136.8mm x 11.0mm x 29.0mm
Weight 25g
1. 2.

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Memory Function 10 logs
Service Life 5 Years
RF interface Bluetooth LE(2400–2483.5 MHz):
2402–2480 MHz; 0 dBm
NFC (13.56MHz): 13.553˜13.567MHz
Operating Mode Adjusted
Intended Operator Thermometer can be used by adults and
children (patient) in non-medical settings.
The operator can contact Customer Support at help@naturalcycles.
com to obtain special test mode(DIRECT MODE) data.
FCC Statement
IMPORTANT INFORMATION REQUIRED BY THE FCC
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: this device may not cause
harmful interference, and this device must accept any interference
received, including interference that may cause undesired operation.
The equipment is suitable for use in domestic establishments
and is tested to CISPR emissions Class B Group 1 as well as home
healthcare immunity criteria found in IEC 60601-1-2 Table 4, 6, and
Table 9. During the IEC 60601-1-2 immunity tests performed the
thermometer will accurately measure temperature or display an
error. NC° Thermometer (Gen3) utilizes Bluetooth Low Energy (BLE),
which uses the 2.4 GHz ISM band. BLE operates between 2.402 and
2.480 GHz. And Near Field Communication (NFC), Which use the
13.56MHz ISM band. NFC operates between 13.553 and 13.567MHz.
NC° Thermometer (Gen3) transmits less than-2 dBm effective
radiated power.To protect the environment, dispose of empty
batteries at appropriate collection sites according to national or local
regulations. Keep out of reach of young children, elderly and pets.

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FCC WARNING: Changes or modications not expressly approved by
Intretech could void the user’s authority to operate the 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 receiver
• Connect the equipment to 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
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for
an uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with
any other antenna or transmitter.
Statement
NC° Thermometer (Gen3) conforms to all the requirements established
in ASTM standard E1112.

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Warranty Information
• The manufacturer provides the warranty of 1 year, starting from the
date on which the appliance is sold to the end user
• The warranty only covers defects in material or workmanship
• The repairs under warranty may only be carried out by an authorized
service centre. When making a claim under the warranty, the
original bill of purchase (with purchase date) must be submitted.
The warranty will not apply in cases of:
• Normal wear and tear
• Incorrect use, e.g. overloading of the appliance, use of non-
approved accessories
• Use of force, damage caused by external inuences
• Damage caused by non-observance of the user manual, e.g.
connection to an unsuitable mains supply or non-compliance with
the installation instructions
• Partially or completely dismantled appliances
Proposition 65 Warning
• WARNING: This product may contain chemicals known to the State
of California to cause birth defects or other reproductive harm.

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Guidance and Manufacturers Declaration —electromagnetic emissions Emissions test Compliance RF emissions CISPR 11 Group 1 RF emissions CISPR 11 Class B Harmonic emissions IEC 61000-3-2
Not applicable
Voltage uctuations/icker IEC 61000-3-3
Not applicable

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Guidance and Manufacturers Declaration –electromagnetic immunity Immunity Test IEC 60601-1-2 Test level Compliance level
Electrostatic discharge (ESD) IEC 61000-4-2
±8 kV contact ±2 kV, ±4kV, ±8kV, ±15kV air
±8 kV contact ±2 kV, ±4kV, ±8kV, ±15kV air
Electrical fast transient/burst IEC 61000-4-4
Not applicable Not applicable
Voltage dips, short interruptions and voltage variations on power supply input lines IEC 61000-4-11
Not applicable Not applicable
Power frequency magnetic eld IEC 61000-4-8 30 A/m
50Hz/60Hz
30 A/m 50Hz/60Hz
Conducted RF IEC 61000-4-6 Not applicable Not applicable
Radiated RF IEC 61000-4-3 10 V/m,
80 MHz – 2,7 GHz, 80 % AM at 1 kHz80 MHz – 2,7
10 V/m 80 MHz – 2,7 GHz 80 % AM at 1 kHz