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The Weather Channel® 
WS-8500TWC-IT  
 
IT-915 MHz 
Wireless Temperature Station 
with Wireless Solar-Powered 
Outdoor Sensor 
 
 
 
 
 
 
 
Wireless Weather Instruments 
by La Crosse Technology® 
 
  
 
La Crosse Technology, Ltd. 
www.lacrossetechnology.com 
2809 Losey Blvd. S. 
La Crosse, WI  54601 
Phone 608-782-1610 
 
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Table of Contents 
  
Table of Contents ............................................... 2
Inventory of Contents .......................................... 2
Features and Specifications ............................... 3
Initial Set Up and Wireless Synchronization ....... 4
TX61U-IT Sensor Power Save "STOP" Mode .... 5
MIN / MAX Temperature Display ........................ 5
Set the Time and Date ........................................ 6
1. Set the Time Zone: ................................ 6
2. Set Daylight Saving Time ON/OFF: ....... 6
3. Set Language: ........................................ 6
5. Set Time - Minute: .................................. 7
6. Set Date - Year: ..................................... 7
7. Set Date - Month: ................................... 7
8. Set Date - Date: ..................................... 7
9. Set Date - Day of Week: ........................ 7
10. Set 12 or 24 Hour Time Mode: ............ 7
11. Set Temperature Mode - °F or °C: ....... 7
Setting the Time Alarm ....................................... 7
Battery Replacement Information ....................... 8
Installation Notes ................................................ 9
Mounting the Units ............................................ 10
Online Resources ............................................. 11
Care and Maintenance ..................................... 11
Troubleshooting ................................................ 12
Warranty Information ........................................ 13
Inventory of Contents   
 
1.  A WS-8500TWC-IT 915 MHz Temperature Station 
(referred to as "Wireless Display" in this manual) 
2.  A TX61U-IT 915 MHz Wireless Solar-Powered 
Outdoor Temperature Sensor with built-in 
rechargeable battery pack (referred to as  
TX61U-IT sensor in this manual) 
3.  Mounting hardware for TX61U-IT sensor 
4.  Instruction manual 
 
 
 
 
 
This product offers:  INSTANT TRANSMISSION is the state-of-
the-art new wireless transmission 
technology, exclusively designed and 
developed by LA CROSSE TECHNOLOGY®. 
INSTANT TRANSMISSION offers you an 
immediate update (every 8 seconds!) of all 
outdoor data measured from the sensors: 
follow your climatic variations in real-time!