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ALTITUDE SETTING

After inserting batteries or adapter, the main unit will enter altitude setting mode directly. 

Press “▲” or “▼” to select pressure unit in hPa, mb or inHg. Press “PRESSURE” to confirm. 

Then press “▲” or “▼” to enter your current altitude in meter or feet. Press “PRESSURE” 

to confirm and exit the setting. This allows the unit to provide a more accurate barometric 

pressure & weather forecast reading. (For more information, see “WEATHER FORECAST & 

BAROMETRIC PRESSURE” section)

SETTING UP THE WIRELESS THERMO-HYGROMETER:

•  For the first installation, always turn on the home unit and then the remote sensor. Set

  Channel 1 for the first remote sensor.  Set channel 2 and channel 3 for the 2nd and 3rd  

  sensor.

•  Press and hold CHANNEL button on main unit until a beep is sound to search for remote  

  sensor.  

•  Press the TX button on the back of remote sensor to transmit RF signal.

•  When RF connection is established, the respective temperature & humidity of the selected  

  channel will appear on the main unit.

ATOMIC CLOCK

The unit will start synchronizing the clock after battery/adapter installation or reset. In normal 

mode, press “     “ on the back of the display, to enforce searching of atomic clock signal. The 

antenna icon will appear during synchronization, if the icon disappears afterwards, atomic 

time signal is not available at the moment.  Try other locations later.  Place the unit away from 

source of interference such as mobile phones, appliances, TV etc. Place the front or back of 

the unit toward Colorado for best signal reception.

Antenna icon with full signal strength       will appear on screen if the reception of atomic time 

is successful. The atomic clock will have a daily synchronization at 02:03 and 03:03 everyday. 

Each reception cycle is minimum 2.5 minutes and maximum 10 minutes. 

WEATHER FORECAST & BAROMETRIC PRESSURE

The unit predicts weather condition of the next 12 – 24 hours based on the change of 

atmospheric pressure.  Allow 48-60 hours after set up for the unit to acclimate to your 

environment. The coverage area is around 18.5 – 31 miles. The weather forecast is based 

on atmospheric pressure change and is about 70-75% correct.  As weather conditions cannot 

be 100% correctly forecasted, we cannot be responsible for any loss caused by an incorrect 

forecast.

 

                      

                   

  SUNNY     PARTLY CLOUDY  CLOUDY 

RAINY 

STORMY

The current weather forecast is the one highlighted by a black-outlined square box.

To obtain an accurate weather forecast & barometric pressure reading, you need to input your 

current altitude. After the reset of the unit, it will enter altitude setting mode. Press “▲” or “▼” 

to set the pressure unit in hPa, mb or inHg. Press “PRESSURE” to confirm. Then enter your 

current altitude in meter or feet. Press “PRESSURE” to confirm and exit the setting. You can 

also hold “PRESSURE” button to enter altitude setting mode during normal use.

Press PRESSURE button to select pressure unit between hPa, inHg & mb.

W177.indd   3

9/15/07   10:21:37 AM

Summary of Contents for WS-450B

Page 1: ...ate signal continuously throughout the United States at 60 kHz The signal can be received up to 2 000 miles away through the internal antenna in the Weather Station However due to the nature of the Ea...

Page 2: ...NE Select the 4 U S time zones Enter DST setting mode F C Toggle degree F C unit Search for atomic time signal Slide Switch BACKLIGHT AUTO HIGH LOW OFF Display brightness setting AUTO mode is recommen...

Page 3: ...nit away from source of interference such as mobile phones appliances TV etc Place the front or back of the unit toward Colorado for best signal reception Antenna icon with full signal strength will a...

Page 4: ...to be cooled in order to get condensation In normal mode press HEAT INDEX DEW POINT button twice to show the respective indoor or outdoor dew point reading on the upper left display DEW POINT icon wi...

Page 5: ...stop alarm for one day press ALARM key Press SNOOZE LIGHT for an extended backlight if adapter is not connected BACKLIGHT BRIGHTNESS CONTROL Select display brightness mode with the slide switch on th...

Page 6: ...ion your sensor under an eave or window ledge etc on North side of home Check the channel button to be sure you are reading the correct sensor Please note the humidity range is 20 99 Below 20 you may...

Page 7: ...on rather than midnight Time Zone is incorrect Weather Station Beeps Alarm is on Low power Button is depressed Forecast Icons Incorrect Set your elevation in the Pressure area Allow 48 60 hours after...

Page 8: ...harged for the repairs or examination The owner must pay any shipping charges incurred in getting your La Crosse Technology Ltd product to a La Crosse Technology Ltd authorized service center Your La...

Page 9: ...ogy com 450 All rights reserved This handbook must not be reproduced in any form even in excerpts or duplicated or processed using electronic mechanical or chemical procedures without written permissi...

Page 10: ...ff 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 an...

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