Extech Instruments WTH600-KIT User manual

USER MANUAL

WTH600 - WIRELESS WEATHER STATION
WITH WIRELESS TRANSMITTER SENSOR

FOR USE IN NORTH AMERICA ONLY

1. INTRODUCTION

Thank you for selecting the Extech WTH600 Wireless Weather Station with 5-in-1 wireless sensor.
The sensor includes a self-emptying rain collector for measuring rainfall, an anemometer for wind
velocity, a wind vane for wind direction, a temperature sensor, and a relative humidity sensor. The
WTH600 comes fully assembled and calibrated for convenience. The sensor transmits data up to
492 ft. (150m), line of sight, to the main display unit via low power radio frequency. The main unit
displays all of the weather data received from the sensor and the user can recall stored weather
data (24-periods). The WTH600 is a powerful and unique personal weather station that, with
proper use, will provide years of reliable service.

FEATURES

 HI/LO Alarms alert the user when programmed weather limits are exceeded
 Barometric pressure is computed and helps forecast the weather and possible storms
 Min/Max feature includes date/time stamp
 View Rainfall rate and daily/weekly/monthly amounts
 Wind-speed levels are shown expressed in Beaufort scale
 Wind-chill, Heat Index, Dew point, and Comfort level are computed and displayed

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CONTENTS

1. INTRODUCTION 1

2. PHYSICAL DESCRIPTIONS 3

3. DISPLAY DESCRIPTIONS 5

4. SENSOR INSTALLATION, BATTERIES, MOUNTING 7

5. MAIN UNIT OPERATION, BATTERIES, MOUNTING 9

6. WEATHER FORECAST 11

7. BAROMETRIC / ATMOSPHERIC PRESSURE 11

8. RAINFALL 12

9. WIND SPEED / DIRECTION 12

10. BEAUFORT SCALE 13

11. WIND CHILL / HEAT INDEX / DEW POINT 14

12. HISTORICAL DATA (PRIOR 24 HOURS) 15

13. MAXIMUM / MINIMUM MEMORY 15

14. HI / LO WEATHER ALERT 15

15. WIRELESS SIGNAL RECEPTION 16

16. TEMPERATURE/HUMIDITY COMFORT LEVELS 16

17. CLEARING STRAY READINGS 17

18. POINTING SENSOR TO THE SOUTH 17

19. MOON PHASES 17

20. CLEANING 18

21. TROUBLESHOOTING 18

22. PRECAUTIONS 19

23. FCC STATEMENT 19

24. SPECIFICATIONS 20

25. Warranty 22

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2. PHYSICAL DESCRIPTIONS

Main unit

1. SNOOZE / LIGHT button

2. HISTORY button

3. MAX/MIN button

4. RAINFALL button

5. BARO button

6. WIND button

7. INDEX button

8. CLOCK button

9. ALARM button

10. ALERT button

11. DOWN button

12. UP button

13. °C/°F slide switch

14. RCC button

15. SCAN button

16. RESET button

17. Battery compartment

18. Alert LED indicator

19. LCD display with backlight

20. Table stand

Wireless Sensor

1. Rain collector

2. Balance indicator

3. Antenna

4. Wind cups

5. Mounting pole

6. Radiation shield

7. Wind vane

8. Mounting base

9. Mounting clamp

10. Red LED indicator

11. RESET button

12. Battery door

13. Screws

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Rain gauge

1. Rain collector

2. Tipping bucket

3. Rain sensor

4. Drain holes

Temperature and humidity sensor

1. Radiation shield

2. Sensor casing

Wind sensor

1. Wind cups (anemometer)

2. Wind vane (direction)

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3. DISPLAY DESCRIPTIONS

Main Display

1. Max/Min/Previous indicator

2. Low battery indicator for main unit

3. Time

4. Ice pre-alert on

5. RC Signal strength indicator

6. DST icon

7. Moon phase

8. Day of the week

9. Alarm icon

10. Date

11. Month

Indoor Temperature/Humidity Display

1. Comfort/cold/hot icon

2. Indoor indicator

3. Indoor humidity

4. Hi / Lo Alert and Alarm

5. Indoor temperature

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Outdoor Temperature/Humidity Display

1. Outdoor signal strength indicator

2. Outdoor indicator

3. Outdoor humidity

4. Hi / Lo Alert and Alarm

5. Outdoor temperature

6. Low battery indicator for sensor

12+ Hour Forecast Display

1. Weather forecast indicator

2. Weather forecast icon

Barometer Display

1. Barometer indicator

2. Histogram

3. Absolute/Relative indicator

4. Barometer units (hPa / inHg / mmHg)

5. Barometer reading

6. Hourly records indicator

Rainfall Display

1. Rainfall indicator

2. Time range record indicator

3. Day records indicator

4. Histogram

5. Hi Alert and Alarm

6. Current rainfall rate

7. Rainfall unit (in / mm)

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Wind Direction/Wind speed

1. Wind direction indicator

2. Wind direction indicator(s) during last
hour

3. Current wind direction indicator

4. Wind speed indicator

5. Wind levels and indicator

6. Beaufort scale reading

7. Current wind direction reading

8. Average/Gust wind indicator

9. Wind speed units (mph, m/s, km/h, knots)

10. Hi Alert and Alarm

Wind Chill/ Heat index/ Indoor Dew point

1. Wind chill/ Heat index/ Indoor dew point
indicator

2. Wind chill/ Heat index/ Indoor dew point
reading

4. SENSOR INSTALLATION, BATTERIES, MOUNTING

Wireless Sensor

The wireless sensor measures wind-speed, wind-direction, rainfall, temperature and humidity. The
sensor ships fully assembled and calibrated for easy installation.

Battery and installation

Unscrew the battery door at bottom of unit and insert the batteries
according to the “+/-”polarity indicated. Screw the battery door
compartment on tightly. Note:

1. Align the watertight O-ring to ensure water-resistance.

2. The red LED will begin flashing every 12 seconds.

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Install the wireless sensor in an open location with no obstructions above and around the sensor
for accurate rain and wind measurement. Install the sensor with the smaller end facing to the
North (proper orientation of the wind direction vane). Secure the mounting stand and bracket
(included) to a post or pole, and allow a minimum distance of 1.5m off the ground.

Mounting guidelines

1. Install the wireless sensor at least 1.5m off the ground for accurate wind measurements.

2. Choose an open area within 150 meters from the Main Unit.

3. Install the wireless sensor as level as possible to achieve accurate rain and wind measurements.
The included leveling device ensures a level installation.

4. Mount the wireless sensor with the wind meter end pointing to the North.

5. Pole mount shown below left and railing mount below right.

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5. MAIN UNIT OPERATION, BATTERIES, MOUNTING

Battery Installation and Mounting

The WTH600 can be placed on a desktop or can be wall mounted for easy viewing.

1. Remove the battery door of the main unit.

2. Insert three ‘AA’ batteries according to the “+/-” polarity marks on the battery compartment.

3. Replace the battery door.

4. Once the batteries are inserted all of the LCD segments will be shown briefly before entering the
radio-controlled time reception mode.

5. The RC clock will automatically start scanning for the radio-controlled time signal in 8 seconds.
Note:

1. If no display appears, press the RESET button using a paper clip or other pointed object.

2. In some cases, you may not receive the signal immediately due to atmospheric disturbance.

Pairing the Sensor with the Main Unit

After insertion of batteries, the Main Unit will automatically search for and connect with the
wireless sensor (antenna icon blinking). When successful, the antenna icon and readings for
outdoor temperature, humidity, wind speed, wind direction, and rainfall will appear on the display.

Manual Pairing after Replacing Batteries

Each time that you replace the sensor’s batteries, you must perform a manual pairing.

1. Replace the batteries.

2. Press the [SCAN] button.

3. Press the [RESET] button on the sensor (bottom of sensor).
Note:

1. Pressing [RESET] generates a new code for pairing purposes.

2. Please dispose of batteries in an environmentally safe manner and in accordance with all

relevant law and regulations.

Radio-controlled (RC) Time Signal

When the unit receives the RC signal, a sync-time symbol will appear on the LCD. Note that
the unit synchronizes daily.
Note:

1. The strength of the signal from the transmitter tower may be affected by geographical location
or surrounding buildings.

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2. Always place the unit away from interfering sources such as TV monitors, computers, etc.

3. Avoid placing the unit on or next to metal plates.

4. Enclosed areas such as airports, basements, or factories are not recommended.

Setting the Date and Time

The unit automatically sets itself accordingly to the Radio Controlled Clock signal it receives. To set
the clock/calendar manually, first disable the reception by holding the RCC button for 8 seconds.

Manually Setting the Clock and Time Zone

1. Press and hold [CLOCK] button for 2 seconds until “12 or 24Hr” flashes.

2. Use [UP]/[DOWN] buttons to adjust, and press [CLOCK] button to continue.

3. Repeat step 2 above for TIME ZONE, HOUR, MINUTE, SECOND, YEAR, MONTH, DATE, and

HOUR OFFSET.

Language and DST (Daylight Savings Time) settings

Note:

1. If no buttons are pressed within 60 seconds, the unit will automatically exit this setting mode.

2. The time zone setting applies only to the North American version where the unit is set to receive
the WWVB signal. User can select PST, MST, CST, EST, AST or NST.

3. The language options are English (EN), French (FR), German (DE), Spanish (ES), and Italian (IT).

4. DST (Daylight Saving Time) feature defaults to Auto. The clock is programmed to automatically
switch when the daylight saving time is in effect. User can set the DST to OFF to disable the
feature.

Disable / Enable RCC Signal Reception

1. Press and hold [RCC] button for 8 seconds to disable the reception.

2. Press and hold [RCC] button for 8 seconds to enable automatic RCC reception.

Turn Alarm Clock On/Off (with ice-alert function)

1. Press the [ALARM] button anytime to show the alarm time.

2. Press [ALARM] button to activate the alarm.

3. Press again to activate alarm with ice-alert function.

4. To disable the alarm, press until the alarm icon disappears.

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Set the Alarm Clock

1. Press and hold [ALARM] for 2 seconds to enter alarm setting mode. HOUR will begin to flash.

2. Use [UP]/[DOWN] buttons to adjust HOUR, and press [ALARM] button to proceed to MINUTE.

3. Repeat step 2 above to set MINUTE, then press [ALARM] button to exit.
Note: Pressing the [ALARM] button twice when alarm time is displayed will activate the
temperature-adjusted pre-alarm (alarm will sound 30 minutes earlier if it detects outside
temperature is below 26°F (-3°C)).

6. WEATHER FORECAST

The WTH600 includes a sensitive pressure sensor that predicts weather for the next 12 ~ 24 hours
within a 19-31 miles (30 to 50km) radius.
Note:

1. The accuracy of a general pressure-based weather forecast is about 70% to 75%.

2. The weather forecast does not necessarily reflect the current weather conditions.

3. The “Snowy” weather forecast is not based on atmospheric pressure; it is based on outdoor
temperature. When the outdoor temperature is below 26°F (-3°C), the “Snowy” weather indicator
will be displayed on the LCD.

7. BAROMETRIC / ATMOSPHERIC PRESSURE

Atmospheric Pressure is the pressure at any location of the Earth caused by the weight of the
column of air above it. One atmospheric pressure refers to the average pressure and gradually
decreases as altitude increases. Meteorologists use barometers to measure atmospheric pressure.
Since variation in atmospheric pressure is greatly affected by weather, it is possible to forecast the
weather by measuring the changes in pressure.

Select the Display mode

Press and hold the [BARO] button for 2 seconds to toggle between:

• ABSOLUTE the absolute atmospheric pressure of your location

• RELATIVE the relative atmospheric pressure based on sea level

Set the Relative Atmospheric Pressure

1. Obtain the atmospheric pressure data for the sea level (the relative atmospheric pressure for
your current location) through the local weather service, internet or other channel.

2. Press and hold [BARO] for 2 seconds until “ABSOLUTE” or “RELATIVE” icon flashes.

3. Press [UP]/[DOWN] button to switch to “RELATIVE” mode.

4. Press [BARO] button again until the “RELATIVE” atmospheric pressure digit flashes.

5. Press [UP]/[DOWN] button to change its value.
6 . Press [BARO] button to save and exit the setting mode.
Note:

1. The default relative atmospheric pressure value is 29.91 inHg (1013 hPa), which refers to the
average atmospheric pressure.

2. When you change the relative atmospheric pressure value, the weather indicators will change.

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3. The built-in barometer detects the environmental absolute atmospheric pressure changes.
Based on the data collected, it can predict weather conditions for the next 12 hours. The weather
indicators will change according to the detected absolute atmospheric pressure after 1 hour.

4. The relative atmospheric pressure is based on the sea level, but it will change with the absolute
atmospheric pressure changes after operating the clock for 1 hour.

Select the Measurement Units for the Barometer

1. Press the [BARO] button to enter the unit setting mode.

2. Use the [BARO] button to change the units to inHg (inches of mercury) / mmHg (millimeter of
mercury) (millibars per hectopascal) /hPa.

3. Press the [BARO] button to confirm.

8. RAINFALL

Select Rainfall Display mode:

The device displays how many mm / inches of rain are accumulated in a one hour time period,
based on current rainfall rate. Press [RAINFALL] button to select from the following:

• RATE Current rainfall rate in the past hour

• DAILY The DAILY display indicates the total rainfall from midnight

• WEEKLY The WEEKLY display indicates the total rainfall from the current week

• MONTHLY The MONTHLY display indicates the total rainfall from the current calendar month

Note: Rain rate is updated every 6 minutes, at every hour on the hour, and at 6, 12, 18, 24, 30, 36,
42, 48, 54 minutes past the hour.

Select the measurement unit for rainfall:

1. Press and hold [RAINFALL] button 2 seconds to enter unit setting mode.

2. Use [UP] / [DOWN] button to toggle between mm (millimeter) and in (inch).

3. Press [RAINFALL] button to confirm and exit.

9. WIND SPEED / DIRECTION

Read the Wind Direction

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Select the Wind Display mode

Press [WIND] button to toggle between:

• AVERAGE The AVERAGE wind speed will display the average of all wind speed numbers recorded
in the previous 30 seconds

• GUST The GUST wind speed will display the highest wind speed recorded from last reading

The wind level provides a quick reference and is indicated by a series of text icons:

Select Wind Speed Units

1. Press and hold [WIND] button for 2 seconds to enter unit setting mode.

2. Use the [UP] / [DOWN] button to change the unit between mph (miles per hour) / m/s (meter
per
second) / km/h (kilometer per hour) / knots.

3. Press [WIND] button to confirm and exit.

10. BEAUFORT SCALE

Beaufort scale is an international scale of wind velocities from 0 (calm) to 12 (Hurricane force).

Beaufort no.

Description

Wind speed

Land conditions

0

Calm

< 1 km/h

Calm. Smoke rises vertically.

< 1 mph

< 1 knot

< 0.3 m/s

1

Light air

1.1–5.5 km/h

Smoke drift indicates wind direction. Leaves and wind
vanes are stationary.

1–3 mph

1–3 knots

0.3–1.5 m/s

2

Light breeze

5.6–11 km/h

Wind felt on exposed skin. Leaves rustle. Wind vanes
begin to move.

4–7 mph

4–6 knots

1.6–3.4 m/s

3

Gentle breeze

12–19 km/h

Leaves and small twigs constantly moving, light flags
extended.

8–12 mph

7–10 knots

3.5–5.4 m/s

4

Moderate breeze

20–28 km/h

Dust and loose paper raised. Small branches begin to
move.

13–17 mph

11–16 knots

5.5–7.9 m/s

5

Fresh breeze

29–38 km/h

Branches of a moderate size move. Small trees in leaf
begin to sway.

18–24 mph

17–21 knots

8.0–10.7 m/s

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6

Strong breeze

39–49 km/h

Large branches in motion. Whistling heard in
overhead wires. Umbrella use becomes difficult.
Empty plastic bins tip over.

25–30 mph

22–27 knots

10.8–13.8 m/s

7

High wind

50–61 km/h

Whole trees in motion. Effort needed to walk against
the wind.

31–38 mph

28–33 knots

13.9–17.1 m/s

8

Gale

62–74 km/h

Some twigs broken from trees. Cars veer on road.
Progress on foot is seriously impeded.

39–46 mph

34–40 knots

17.2–20.7 m/s

9

Strong gale

75–88 km/h

Some branches break off trees, and some small trees
blow over. Construction/temporary signs and
barricades blow over.

47–54 mph

41–47 knots

20.8–24.4 m/s

10

Storm

89–102 km/h

Trees are split or uprooted, structural damage likely.

55–63 mph

48–55 knots

24.5–28.4 m/s

11

Violent storm

103–117 km/h

Widespread vegetation and structural damage likely.

64–73 mph

56–63 knots

28.5–32.6 m/s

12

Hurricane force

≥ 118 km/h

Severe widespread damage to vegetation and
structures. Debris and unsecured objects become
airborne.

≥ 74 mph

≥ 64 knots

≥ 32.7m/s

11. WIND CHILL / HEAT INDEX / DEW POINT

View the Wind Chill

Press the [INDEX] button repeatedly until the WINDCHILL appears.
Note: The wind chill factor is based on the combined effects of temperature and wind speed. The
wind chill displayed is calculated solely from temperature and humidity measured by the wireless
sensor.

View the Heat Index

Press the [INDEX] button repeatedly until the HEAT INDEX appears.
Note: Heat index is only calculated when temperature is 80°F/27°C or above, and based solely from
the temperature and humidity measured by the wireless sensor.

Heat Index Range

Warning

Explanation

80°F to 90°F (27°C to 32°C)

Caution

Possibility of heat exhaustion

91°F to 105°F (33°C to 40°C)

Extreme Caution

Possibility of heat dehydration

106°F to 129°F (41°C to 54°C)

Danger

Heat exhaustion likely

≥130°F (≥55°C)

Extreme Danger

Strong risk of dehydration / sun stroke

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View Dew point (Indoor)

Press the [INDEX] button repeatedly until DEWPOINT appears.
Note: The dew point is the temperature below which the water vapor in air, at a constant
barometric pressure, condenses into liquid water at the same rate at which it evaporates. ‘Dew’ is
the term used to describe the condensed water that forms on a solid surface. The dew point
temperature is calculated from the indoor temperature/humidity measured at the Main Unit.

12. HISTORICAL DATA (PRIOR 24 HOURS)

The main unit automatically records and displays data from the previous 24 hours on the hour. To
check all of the historical data from the past 24 hours, press the [HISTORY] button. E.g. Current
time 7:25 am, March 28
Press [HISTORY] repeatedly to view prior readings at 7:00am, 6:00am, 5:00am, …, 5:00am (Mar 27),
6:00am (Mar 27), 7:00am (Mar 27)
The LCD will display the prior indoor and outdoor temperature & humidity, air pressure, wind chill,
wind speed, rainfall along with the time and date.

13. MAXIMUM / MINIMUM MEMORY

Press the [MAX/MIN] button to view the maximum/minimum records in the following sequence:

• Outdoor MAX temperature, Outdoor MIN temperature

• Outdoor MAX humidity, Outdoor MIN humidity

• Indoor MAX temperature, Indoor MIN temperature

• Indoor MAX humidity, Indoor MIN humidity

• Outdoor MAX wind chill, Outdoor MAX wind chill

• Outdoor MAX heat index, Outdoor MIN heat index

• Indoor MAX dew point, Indoor MIN dew point

• MAX pressure, MIN pressure

• MAX average gust

• MAX gust

• Max rainfall

Press and hold [MAX/MIN] for 2 seconds to reset the MAX/MIN records. Note: The display shows
date/time stamp along with all maximum or minimum readings.

14. HI / LO WEATHER ALERT

The WTH60 can alert you to specific weather conditions. When the alert function is active, the
amber LED flashes when certain conditions exist; see table below.

Area

Types of Alerts Available

Indoor Temperature

HI and LO alert

Indoor Humidity

HI and LO alert

Outdoor Temperature

HI and LO alert

Outdoor Humidity

HI and LO alert

Rainfall

HI alert (rainfall since midnight)

Wind speed

HI alert

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Set the HI / LO alert

1. Press the [ALERT] button to select the desired display field.

2. Use [UP] / [DOWN] buttons to adjust the settings.

3. Press [ALERT] button to confirm and continue to the next setting.

Enable/disable the HI / LO Alarm Alert

1. Press the [ALERT] button to select the desired display field.

2. Use [ALARM] to turn the alert on or off.

3. Press [ALERT] to continue to the next setting.

Note:

1. The unit will automatically exit setting mode in 5 seconds if no button is pressed.

2. When ALERT alarm is on, the area and type of alert that triggered the alarm will be flashing and
the alarm will sound for 2 minutes.

3. To silence the Alert alarm beeper, press the [SNOOZE / LIGHT] / [ALARM] button, or allow the
beeper to automatically turn off after 2 minutes.

15. WIRELESS SIGNAL RECEPTION

The sensor transmits data wirelessly over an approximate range of 150m (line of sight).
Occasionally, due to intermittent physical obstructions or other environmental interference, the
signal may weaken or be lost. If the sensor signal is lost completely, please relocate the main unit
or the wireless sensor.

16. TEMPERATURE/HUMIDITY COMFORT LEVELS

Comfort Indication

The comfort pictorial indication is based on indoor air temperature and humidity.

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Note:

1. Comfort indication can vary at the same temperature, depending on the humidity.

2. There is no comfort Indication when temperature is below 32°F (0°C) or above 140°F (60°C).

17. CLEARING STRAY READINGS

During installation of the wireless sensor, the sensors are typically triggered which results in
erroneous rainfall and wind measurements. After the installation, the user may clear all of the
erroneous data from the Main Unit, without having to reset the clock and re-establish pairing.
Simply press and hold the [HISTORY] button for 10 seconds. This will clear all data.

18. POINTING SENSOR TO THE SOUTH

The outdoor sensor is calibrated to be pointing to North by default. However, in some cases, users
may wish to install the product with the arrow pointing towards the South, especially for those
living in the Southern hemisphere (e.g. Australia, New Zealand).

1. Install the outdoor sensor with its arrow pointing to the South.

2. On the main unit, press and hold [WIND] for 8 seconds until the upper part (Northern
Hemisphere) of the compass lights and starts blinking.

3. Use [UP] / [DOWN] to move to the lower part (Southern Hemisphere).

4. Press the [WIND] button to confirm and exit.
Note: Changing hemispheres will automatically switch the direction of the displayed moon phases.

19. MOON PHASES

In the Northern hemisphere, the moon waxes (the part of the moon we see that glows after the
New Moon) from the right. Hence, the sun-lit area of the moon moves from right to left in the
Northern Hemisphere, while in the Southern Hemisphere, it moves from left to right. Below are
two tables illustrating how the moon phase will appear on the main unit.

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Northern hemisphere:

New Moon

Full Moon

Waxing Crescent

Waning Gibbous

First quarter

Third quarter

Waxing Gibbous

Waning Crescent

Southern hemisphere:

New Moon

Full Moon

Waxing crescent

Waning Gibbous

First quarter

Third quarter

Waxing Gibbous

Waning Crescent

20. CLEANING

Cleaning the Rain Collector

1. Rotate the rain collector 30° counter-clockwise.

2. Gently remove the rain collector.

3. Clean and remove debris.

4. Allow components to dry before re-assembly.

Cleaning the Thermo-Hygro sensor

1. Unscrew the 2 screws at the bottom of the radiation shield.

2. Gently pull out the shield.

3. Remove carefully any dirt or insects inside the sensor casing (Do
not let the sensors inside get wet).

4. Clean the shield with water and remove any dirt.

5. Re-assemble after fully cleaning and drying.

21. TROUBLESHOOTING

Problem/Symptom

Solution

Unusual or no rain sensor
measurement

Check the drain hole on rain collector

Check balance indicator

Unusual or no thermos/Hygro
sensor measurement

Check radiation shield

Check sensor casing

Unusual or no wind
speed/direction measurement

Check wind cups (anemometer)

Check wind vane

Signal lost for 15 minutes

Relocate main unit and sensor close to each other.

Ensure the main unit is placed away from other electrical appliances
that may interfere with wireless communication

Signal lost for 1 hour

Reset both main unit and sensor

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22. PRECAUTIONS

• Please observe all warnings and follow all instructions.

• Do not subject the unit to excessive force, shock, dust, temperature or humidity.

• Do not obstruct the ventilation holes.

• Do not immerse in water. If the unit gets wet, dry it immediately with a soft, lint-free cloth.

• Do not clean the unit with abrasive or corrosive materials.

• Do not tamper with the unit’s internal components. This invalidates the warranty.

• Use new batteries only. Do not mix new and old batteries.

• Dispose of this product responsibly.

• Placement of this product on certain types of wood may result in damage to its finish.

• Do not attempt to service this device; doing so may result in fire or electric shock.

• Dispose of batteries responsibly and in compliance with all regulatory restrictions.

• Please note that some units are equipped with a battery safety strip. Remove the strip from the battery

compartment before first use.

23. FCC STATEMENT

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.

Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.

NOTE: 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 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.

This device complies with Industry Canada License-exempt RSS-210. Operation is subject to the following two conditions: (1)
this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.

IC: 1590A-WTH600
CAN RSS-Gen/CNR-Gen.
FCC ID: IWK-WTH600

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NORTH AMERICAN VERSION 20 WTH600-en-US_v1.0 12/17

24. SPECIFICATIONS

MAIN UNIT

Dimensions (W x H x D)

4.7 x 7.5 x 0.9” (120 x 190 x 22 mm)

Weight

13.1 oz. (370g) with batteries

Battery power

3 x AA size 1.5V batteries (Alkaline recommended)

Sensor displays

Wind speed, Wind direction, Rain gauge, Temp., RH

INDOOR BAROMETER

Barometer units

hPa, inHg and mmHg

Measuring Range

540~1100 hPa; 405~825 mmHg; 15.95~32.48 inHg

Resolution

1hPa, 0.01inHg, 0.1mmHg

Accuracy@ 32~122°F
(0~50°C)

540~699hPa ±8 hPa / 700~1100hPa ±4 hPa
405~524 mmHg ±6 mmHg / 525~825 mmHg ±3 mmHg

15.95~20.66 inHg 0.24 inHg / 20.67~32.48 inHg ±0.12 inHg

Weather forecast

Sunny / Clear, slightly Cloudy, Cloudy, Rainy, Rainy / Stormy and Snowy

Display modes

Current, Max, Min, Historical data for last 24hrs

Memory modes

Max & Min from last memory reset (with time stamp)

INDOOR TEMPERATURE

Temp. units

°F or °C

Display range

-40°F to 158°F (-40°C to 70°C)

Operating range

14°F to 122°F (-10°C to 50°C)

Resolution

0.1°F or 0.1°C

Accuracy

+/- 2°F or 1°C typical @ 77°F (25°C)

Display modes

Current, Min and Max, Historical data for past 24 hours

Memory modes

Max & Min from last memory reset (with time stamp)

Alarm

Hi / Lo Temperature Alert

INDOOR HUMIDITY

Display range

20% to 90% RH (< 20%: LO; > 90%: HI); Temp.: 0°C~60°C (32°F~140°F)

Operating range

20% to 90%RH

Resolution

1%

Accuracy

+/-5% typical @ 77°F (25°C)

Display modes

Current, Min and Max, Historical data for past 24 hours

Memory modes

Max & Min from last memory reset (with time stamp)

Alarm

Hi / Lo Humidity Alert

RADIO CONTROLLED ATOMIC CLOCK

Synchronization

Auto or disabled

Clock display

HH:MM:SS / Weekday

Hour format

12hr AM/PM or 24hr

Calendar

MM/DD

Languages (weekday)

EN, FR, DE, ES, IT

Time signal

WWVB

Time zones

PST, MST, CST, EST, AST, NST

DST (daylight savings)

AUTO / OFF

WIRELESS SENSOR

Dimensions (W x H x D)

13.5 x 15.5 x 5.5” (343.5 x 393.5 x 136 mm)

Weight

23.7 oz. (673g) with batteries

Battery power

3 x AA size 1.5V battery (Lithium battery recommended)

Frequency

915 MHz (North America)

Transmission

Every 12 seconds

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NORTH AMERICAN VERSION 21 WTH600-en-US_v1.0 12/17

OUTDOOR TEMPERATURE

Temp. units

°F or °C

Display range

-40°F to 176°F (-40°C to 80°C)

Operating range

-40°F to 140°F (-40°C to 60°C)

Resolution

0.1°F or 0.1°C

Accuracy

+/- 1°F or 0.5°C typical @ 77°F (25°C)

Display modes

Current, Min and Max, Historical data for past 24 hours

Memory modes

Max & Min from last memory reset (with time stamp)

Alarm

Hi / Lo Temperature Alert

OUTDOOR HUMIDITY

Display range

1% to 99% (< 1%: LO; > 99%: HI)

Operating range

1% to 99%

Resolution

1%

Accuracy

+/- 3% typical @ 77°F (25°C)

Display modes

Current, Min and Max, Historical data for past 24 hours

Memory modes

Max & Min from last memory reset (with time stamp)

Alarm

Hi / Lo Humidity Alert

RAIN GAUGE

Units

mm and in

Range

0~393.7inches (0~9999mm)

Resolution

0.0157 in (0.4 mm)

Accuracy

+/- 7% or 1 tip (whichever is greater)

Display modes

Rainfall (Rate / Daily / Weekly / Monthly), Historical data for past 24 hours

Memory modes

Total rainfall from last memory reset

Alarm

Hi Rainfall Alert

WIND SPEED

Wind speed units

mph, m/s, km/h, knots

Wind speed range

0~112mph, 50m/s, 180km/h, 97knots

Wind speed resolution

0.1mph or 0.1knot or 0.1m/s

Wind speed accuracy

< 5m/s: +/- 0.5m/s; > 5m/s: +/- 6%

Direction resolution

16

Display modes

Gust/average wind speed & direction, Historical data for past 24 hours

Memory modes

Max gust speed with direction (with time stamp)

Alarm

Hi Wind speed Alert (Average / Gust)

WEATHER INDEX

Wind Chill range

-40~158°F (-40~70°C)

Heat Index range

78.8~122°F (26~50°C)

Indoor Dew Point range

-40~158°F (-40~70°C)

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