La Crosse Technology C85845v4 User manual

Wireless Color Weather Station
INSTRUCTION MANUAL
MODEL: C85845V4
DC: 071620
FIND MANUALS, FAQS, AND MORE UNDER
THE SUPPORT TAB HERE: bit.ly/laxtech_support

TABLE OF CONTENTS
Wireless Temperature & Humidity Station Page | 2
3. Power Up
3. LCD Features
4. Buttons
5. WWVB Atomic Time Signal
5. Settings Menu
6. Adjustable Backlight
7. Comfort Charts
7. Temperature & Humidity Alerts
8. Arm/Disarm Alerts
9. HI/LO Temperature & Humidity Records
9. Heat Index and Dew Point Explained
10. Temperature & Humidity Trend Arrows
10. Sensor Search
10. Forecast Icons
11. Low Battery Indicators
11. Factory Restart
12. Sensor Weather Shield
12. We’re Here to Help!
12. Join the Conversation
12. Care and Maintenance
13. Specifications
13. Warranty Info
13. FCC Statement

POWER UP
1. Insert 2-AA batteries into your Outdoor Sensor.
2. Insert the 5 volt power cord into an outlet, then into your
station. Optional: Insert 2-AA batteries for backup.
3. Adjust time and date settings on your station.
4. Once the Outdoor Sensor is reading to your station, place it outside in a shaded location.
Watch sensor mounting video: http://bit.ly/TH_SensorMounting
Outdoor Sensor
TX141TH-Bv3
Wireless Weather Station
C85845v4
LCD FEATURES
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AA
AA
AA
2
3
4
1
5
6
7
Alerts (HI-LO-OFF)
Temperature Trend
Indoor Temperature
Low Battery
Indoor Humidity
Humidity Trend
Comfort Chart
2
3
4
1
5 6
7

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2
3
4
1
5
6
7
Forecast Trend
Forecast Symbols
AM/PM
Atomic Time
Alarm/Snooze
Weekday
Month/Date
8Atomic Reception
2
34
1
5
6
7 8
2
3
4
1
5
6
7
Alerts (HI-LO-OFF)
Temperature Trend
Outdoor Temperature
Low Battery
Sensor Strength
Outdoor Humidity
Humidity Trend
8Comfort Chart
2
3
4
1
5
67
8
SETSNOOZE/BACKLIGHTTEMP
ALARM
ALERTS
BUTTONS

SETTINGS MENU
It is best to press one button at a time when setting your station.
1. Hold, then release the SET button to enter time set mode.
2. Press and release the + or - buttons to adjust the values. Hold to adjust quickly.
3. Press and release the SET button to confirm and move to the next item.
4. Press and release the BACKLIGHT button any time to exit settings.
Settings Menu Order:
• Language
• Beep ON/OFF
• Atomic ON/OFF
• Time Zone
• DST ON/OFF
• 12H/24H
• Hour
• Minutes
• Year
• Month
• Date
• Fahrenheit/Celsius
Note: When Spanish (Español), is selected, the rest of
the instructions will be in that language.
Note: Your weekday will set automatically after year,
month, and date are set.
• The station will search for the atomic signal at UTC 7:00, 8:00, 9:00, 10:00, and 11:00.
• If there is no WWVB reception, the station will search for the Atomic Time Signal every 2 hours until the
WWVB Time is received.
• The Atomic Time Signal Icon will flash while searching and will be solid when it has connected.
• After reception, this station will only search for the atomic signal after midnight.
• From normal time display, press and release the SET button to search for the WWVB time signal.
• Please be sure you have selected your time zone from the list in the Settings Menu. When the Atomic
Time Signal is received, the station will set to the time zone selected. Default is Eastern Time.
• For information about WWVB visit: bit.ly/AtomicTime
WWVB ATOMIC TIME SIGNAL
Language
AST
EST
CST
MST
PST
AKT
HAT
Atlantic
Eastern
Central
Mountain
Pacific
Alaskan
Hawaiian
Time Zone
DST ON/OFF
Time Zone
Atomic ON/OFF
Beep ON/OFF
12/24 Format
Month
Year
Minutes
Hour
Page | 5

To Begin:
1. Hold the SET button for five seconds to enter settings SET. ENGLISH will show for language. Press the +
or – button if you want ESPANOL.
2. Press SET to select BEEP ON/OFF. BEEP ON will show. Press the + or – button to select BEEP OFF and
silence the beep when buttons are pressed.
3. Press SET to select ATOMIC ON/OFF. ATOMIC ON will show. Press the + or – button to select ATOMIC
OFF if you do not want the atomic time signal.
Note: If ATOMIC OFF is selected, you will skip Time Zone and DST settings and move 12/24 hour time.
5. Press SET to select Time Zone. ZONE EST will show. Press the + or – button to select a dierent time
zone. (AST=Atlantic, EST=Eastern, CST=Central, MST=Mountain, PST=Pacific, AKT=Alaska, HAT=Hawaii)
6. Press SET to select DST On/OFF. DST ON will show. Press the + or – button to select DST OFF if you do
observe Daylight Saving Time.
7. Press SET to select 12/24 hour time format. 12H will show. Press the + or – button if you prefer 24 hour
time format.
8. Press SET to select Hours. The Hour will show. Press the + or – button to adjust the hour.
9. Press SET to select the Minutes. The Minutes will show. Press the + or – button to adjust the minutes.
10. Press SET to select the Year. The Year will show. Press the + or – button to adjust the year.
11. Press SET to select the Month. The Month will show. Press the + or – button to adjust the month.
12. Press SET to select the Date. The Date will show. Press the + or – button to adjust the date.
13. Press SET to select Fahrenheit/Celsius. The °F will show. Press the + or – button to select Celsius. Press
SET to confirm and exit.
ADJUSTABLE BACKLIGHT
• When operating with the power cable, the backlight is adjustable: HI-LOW-OFF.
• Press and release the BACKLIGHT button to adjust backlight.
• When operating on batteries only, the backlight will come on briefly when the BACKLIGHT button is
pressed.
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Date
Fahrenheit/Celsius

COMFORT CHARTS
TEMPERATURE & HUMIDITY ALERTS
Programmable Temperature and Humidity alerts keep you on top of changing conditions.
To set alerts:
1. Hold the ALERTS button to enter alert set mode. Outdoor HI ALERT OFF will show. If you wish to set this
alert value, press the + or – buttons to arm this alert (ON).
2. When the alert is armed (ON) press and release the ALERTS button and the alert value will flash.
Press the + or – buttons to change the alert value.
3. Press the ALERTS button to confirm and move to the next alert.
Note: If you do not wish to set an alert, press the ALERTS button again to move the next alert. (When the
alert is OFF (disarmed) press ALERTS button to skip setting that alert value).
Note: Press the BACKLIGHT button at any time to exit.
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• Indoor & Outdoor comfort charts keep you informed when the humidity is at a comfortable level.
• The bar over the chart will move to indicate the humidity level.

Arm & Disarm Alerts:
1. Hold the ALERTS button 3 seconds to enter alert set mode.
2. Press and release ALERTS button until you see the alert you wish to arm or disarm.
3. Press the + or - buttons to arm or disarm the alert. (If you arm and alert, the next step will be to set alert
value).
4. Press the BACKLIGHT button to exit.
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Alert Setting Order:
• Outdoor HIGH Temperature ON/OFF
• Outdoor HIGH Temperature Value
• Outdoor LOW Temperature ON/OFF
• Outdoor LOW Temperature Value
• Outdoor HIGH Humidity ON/OFF
• Outdoor HIGH Humidity Value
• Outdoor LOW Humidity ON/OFF
• Outdoor LOW Humidity Value
• Indoor HIGH Temperature ON/OFF
• Indoor HIGH Temperature Value
• Indoor LOW Temperature ON/OFF
• Indoor LOW Temperature Value
• Indoor HIGH Humidity ON/OFF
• Indoor HIGH Humidity Value
• Indoor LOW Humidity ON/OFF
• Indoor LOW Humidity Value
Alert Sounds:
• When armed alert value is reached, station will beep 5 times each minute, until out of alert range.
• The flashing alert icon will indicate the type of alert HI or LO.
• Press any button to stop the alert from sounding.
• The alert icon will continue flashing while alert value is in alert range.
• Disarm the alert to stop the alert entirely.
• When an alert is not armed OFF will show.

HI/LO TEMPERATURE & HUMIDITY RECORDS
All HI/LO temperature/humidity records will reset automatically at 12:00 (midnight).
From normal display, press and release the TEMP button to view:
• HI indoor and outdoor temperature/humidity records.
• LO indoor and outdoor temperature/humidity records.
• Outdoor Heat Index.
• Outdoor Dew Point.
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HEAT INDEX & DEW POINT EXPLAINED
Heat Index:
Heat Index combines the eects of heat and humidity. It is the apparent temperature of how hot it feels to a
human being. As humidity increases, the body is unable to cool eectively. The temperature will feel
warmer.
Dew Point:
Dew Point Temperature is the saturation point of the air, or the temperature to which the air has to cool in
order to create condensation. The higher the dew points, the higher the moisture content of the air at a
given temperature.

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TEMPERATURE & HUMIDITY TREND ARROWS
The temperature and humidity trend indicators update with every 15 minutes and look back over the past
hour.
• Change in temperature (2°F / 1°C, 3% RH).
• 1 hrs comparison which changes on every 1/4 hour
E.g.: At 1:00 - compare to 12:00 data; at 1:15 -compare to 12:15: at 1:30 - compare to 12:30 ….. etc
Down Arrow (blue):
temperature has fallen
in the past hour
Up Arrow (red):
temperature has risen
in the past hour
No Arrows or Thermometers
temperature has not changed more than 2°F in the past hour
Up Arrow:
Humidity has risen
in the past hour
Down Arrow:
Humidity has fallen
in the past hour
Humidity Trend
SENSOR SEARCH
• If you are seeing dashes in place of outdoor temperature, first check your sensor batteries.
• Hold the TEMP button for 3 seconds to search for the sensor. Sensor Reception icon will flash while
searching and be solid when sensor signal is received.
• If you regain connection while the sensor is mounted, great. If you do not regain connection, bring the
sensor within 10 feet of the station and search again.
Note:
• If the signal is lost, the RX will display the ast data recorded from sensor for 10 minutes.
• After that 10 minutes if the signal does not come back then you will see dashes “--”.
• After 30 minutes, start looking for the sensor signal automatically.
The unit predicts weather condition of the next 12-hours based on the change of atmospheric pressure. The
weather forecast is about 70-75% correct.
Forecast Icons: · Sunny · Partly Cloudy · Cloudy · Rain · Storms · Snow (below 32°F, 0°C)
This station learns. Please allow 7-10 days for barometric calibration. This will ensure an accurate personal
forecast for your location.
FORECAST ICONS
SUNNY
CLOUDY
PARTLY SUNNY

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RAIN
SNOW
T-STORM
Intelligent Weather Forecast:
This station learns. Please allow 7-10 days for barometric calibration. This will ensure an accurate personal
forecast for your location.
Six forecast icons use changing atmospheric pressure to predict
weather conditions for the next 12-hours with 70-75% accuracy
FACTORY RESTART
• The Factory Restart is a great way to return your station to “out of the box” condition.
Factory Restart:
1. Remove all power (batteries and AC) from outdoor sensor and weather station.
2. Press one of the buttons on the weather station at least 20 times to clear all memory.
3. Verify that the weather station is blank before proceeding (there may be lines painted on the screen that
will show when there is no power).
4. Leave both units without power for 15 minutes (very important).
5. Insert the AC power cord into the wall outlet then into the weather station.
6. Insert fresh batteries into the outdoor sensor.
7. Press the TX button on the outdoor sensor to transmit RF signal.
8. Keep the outdoor sensor 5-10 feet from the weather station.
9. When RF connection is established, the temperature will appear on the station. Allow the outdoor sensor
and weather station to sit together for 15 minutes to establish a strong connection.
10. Do not press buttons for 15 minutes.
LOW BATTERY INDICATORS
• When Battery Indicator shows next to the Outdoor Temperature, replace batteries in your Outdoor
Sensor.
• When Battery Indicator shows next to your Indoor Temperature, replace batteries in your Station.

SENSOR WEATHER SHIELD-NOT INCLUDED
The Sensor Weather Shield is designed to protect your outdoor sensor from rain and snow. This shield will
oer limited protection from the sun’s heat. Purchase at: http://bit.ly/925-1418
WE’RE HERE TO HELP!
If you require additional support, call or customer support team based out of La Crosse, Wisconsin.
Phone: [phone]
Or fill out our online support request form here: bit.ly/contact_techsupport
Our knowledgeable support team is available: Monday-Friday, 8am-6pm CST
JOIN THE CONVERSATION
Ask questions, watch detailed setup videos, and provide feedback on our social media outlets!
Wireless Temperature & Humidity Station Page | 12
CARE AND MAINTENANCE
• Do not mix old and new batteries.
• Do not mix Alkaline, Standard, Lithium, or Rechargeable batteries.
• Always purchase the correct size and grade of battery most suitable for intended use.
• Replace all batteries of a set at the same time.
• Clean the battery contacts and also those of the device prior to battery installation.
• Ensure the batteries are installed with correct polarity (+ and -).
• Remove batteries from equipment which is not to be used for an extended period of time.
• Promptly remove expired batteries.

Indoor
Temperature Range: 32°F to 122°F (0°C to 50°C)
Humidity Range: 10% to 99% RH
Outdoor
Temperature Range: -40°F to 140°F (-40°C to 60°C)
Humidity Range: 10% to 99% RH
Transmission Range: 330 ft (100 meters) 433MHZ (open air)
Power Requirements Station: AC6: GPU280500150WA00
Optional: 3 “AA” Batteries (not included)
Sensor: 2 “AA” Batteries (not included)
Dimensions Station: 8.98” L x 1.0” W x 5.43” H (22.8cm L x 2.6 cm W x 13.8cm H)
TX141TH-Bv3 Sensor: 1.57” L x 0.79” W x 5.12” H (4.0cm L x 2.0cm W x 13.0cm H)
SPECIFICATIONS
WARRANTY INFO
La Crosse Technology, Ltd. provides a 1-year limited time warranty (from date of purchase) on this product
relating to manufacturing defects in materials & workmanship.
For Full Warranty Details, Visit: www.lacrossetechnology.com/support
Wireless Temperature & Humidity Station Page | 13
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 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.
CAUTION!
Any changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
FCC STATEMENT

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All rights reserved. This manual may not be reproduced in any form, even in part, or duplicated or
processed using electronic, mechanical or chemical process without the written permission
of the publisher.
This booklet may contain errors or misprints. The information it contains is regularly checked and corrections
are included in subsequent editions. We disclaim any responsibility for any technical error or printing error,
or their consequences. All trademarks and patents are recognized.
WARNING: This product can expose you to chemicals including styrene, which is known to the State of
California to cause cancer. For more information go to: www.P65Warnings.ca.gov