TX141V4 La Crosse Replacement wireless temperature sensor

$16.75 USD


Please see the La Crosse Technology Sensor Compatibility Charts for guidance in selecting your sensor.  The TX141V4 is backwards compatible with TX141V3, TX141V2 and TX141.

 PLEASE NOTE:  If you are not 100% SURE this sensor is compatible with your base unit, please contact us to confirm you are ordering the correct one.  YOU CANNOT GO BY MHZ. Also, if you are replacing a snesor, THE MODEL NUMBERS MUST MATCH EXACTLY!

PLEASE NOTE:  Due to our contracts with manufacturers, we are unable to sell this item to resellers.

The La Crosse TX141V4 is a wireless temperature sensor that operates on the 433 MHz frequency. It is designed to monitor temperature remotely and wirelessly transmit data to a compatible receiver or data logger.

The sensor has a temperature range of -40 to 140 degrees Fahrenheit (-40 to 60 degrees Celsius) and a transmission range of up to 200 feet (61 meters) in open air, allowing it to be placed in a variety of locations. It is powered by two AA batteries and has a low battery indicator to alert users when the battery needs to be replaced.

The TX141V3 allows users to monitor indoor and outdoor temperature and humidity from multiple locations which provide weather forecasting and indoor/outdoor temperature and humidity monitoring.

The sensor is designed to be weather-resistant and can be used both indoors and outdoors. It comes with a mounting bracket and hardware for easy installation. The TX141V4 is a reliable and convenient tool for monitoring temperature and can be used for a variety of applications, including home weather monitoring, greenhouse temperature monitoring, and more.


  • Temperature range: -40°F to 140°F (-40 °C to 60 °C)
  • Transmission range: Up to 330 feet (100 meters)
  • Transmission frequency: 433 MHz
  • Indoor or Outdoor Temperature Sensor
  • Weather Resistant

Power requirements:

  • 2 "AA" Alkaline batteries (not included)


  • 1.58" L x 0.83" W x 5.08" H
Compatible With
  • 513-149
  • 616-146
  • W86111

Consider protecting your sensor with the Sensor Weather Shield by la Crosse 

PLEASE NOTE:  All non-defective returns will incur a 20% restocking fee. 

Product Manual

Download the product manual here

Shipping & Delivery

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

Terms And Conditions

Making A Purchase

Making a purchase could not be easier. Just browse our store and add any items that you wish to buy into the shopping cart. After you have finished your selections, click on 'Checkout' and you will be asked for a few details that we need to be able to complete the order.

We accept credit cards and PayPal for payment. If you are shopping from outside of the USA, place your order and your credit card company will convert the transaction to your own currency. Please note that we can not ship to all international locations. If we are unable to ship to your location, we will advise you and your credit card will not be charged.

We accept Discover, Visa, Master Card and American Express. We do not charge for any item until it is ready to ship. Back-ordered items are not charged until they are shipped. You may send your credit card information via phone, fax, snail mail or securely over the Internet.

When confirmation of order is received, this is to indicate that we have received your order. It does not indicate that a contract exists between us. We will indicate acceptance of your order, and hence a contract between us, when we send you an invoice. We have included this term to protect us in the case that a mistake has been made in pricing, we have inadvertently underpriced goods, or we are no longer able to supply a particular product for some reason. In the case of a change of price, we will always contact you first to ensure that the price is acceptable.
 Credit Card Security
 When you place your order with us, your credit card number is encrypted for transmission to us using 128 bit encryption. Your credit card details are never by us since they are transmitted directly to the processing company.  As such, all refunds must be made to the same card used for the purchase.

Contacting Us
If you need to reach us, please email us using the link on the store page, alternatively, you can reach us at:

Tech Instrumentation Inc.
750 E Kiowa Ave.
PO Box 2029
Elizabeth, CO 80107-2029

Phone: [800) 390-0004 Toll free
Phone: (303) 841-7567
Fax: (303) 840-8568

NOTE: We do not accept unsolicited advertisements at the facsimile number.

Email: info@techinstrument.com

Shipping And Handling
Shipping and handling charges are shown on a page just prior to your placing the order. We can ship to many parts of the world that are not allowed on the site. Please e-mail us for a shipping quote. Please call if you have any questions. 
PLEASE NOTE: If you return an item that you ordered with free shipping, we may, at our option deduct our shipping cost from your refund.

Delivery Schedule
We will normally ship your order to you within 1 to 3 business days. We will notify you via e-mail or telephone if we will be unable to ship within 3 business days. If your order is urgent, please let us know. We'll do our best to expedite urgent orders.
Back Orders
If your item is not in stock and we will not be able to ship within 10 business days, we will back order for you. You will always be emailed with the option to cancel your order if you would rather not wait.
Tax Charges
Orders made from within Colorado - sales tax will be applied. We do not currently charge taxes outside of Colorado, but some of our payment processors may charge sales tax and remit it directly to your state.
Most of our products come with a one year warranty. Most of the Cooper-Atkins thermometers which carry a five-year warranty. Most probes come with a one year warranty. Buyer assumes full responsibility in determining the suitability of these items for buyers intended use.
Privacy Policy
Tech Instrumentation will not disclose buyers' information to third parties other than when order details are processed as part of the order fulfillment.  Cookies are used on this shopping site to keep track of the contents of your shopping cart, to store delivery addresses if the address book is used and to store your details if you select the 'Remember Me' Option. They are also used after you have logged on as part of that process. You can turn off cookies within your browser by going to 'Tools | Internet Options | Privacy' and selecting to block cookies. If you turn off cookies, you will be unable to place orders or benefit from the other features that use cookies.

Returns Policy
Buyer assumes full responsibility in determining the suitability of these items for buyers intended use.  Most items come with a minimum one year warranty against defects in manufacturing.


New and unopened items sold by Tech Instrumentation.com may be returned within 30 days of delivery. All items require prior authorization from Tech Instrumentation before they can be returned. We will also pay the return shipping costs if the return is a result of our error (e.g. you received an incorrect or defective item). New and unopened items being returned due to a customer error in ordering or handling will be subject to a restocking fee of 30% and must be returned freight prepaid.

All returns require a RGA number from Tech Instrumentation prior to being returned. Items must be returned postage paid to our facility in order to be considered for refund. Please call 303 841-7567 to obtain a RGA number if you need to return an item. Non defective returns must be in the original unopened packaging with all accessories to be eligible for a refund. Unopened items are subject to a 20% inspection and restocking charge. Non defective items that have been opened or are missing any parts including instructions are not eligible for return. Defective items will be repaired or replaced per mfg. policy. Shipping & Handling charges are not refundable. Service charges (repairs, certifications etc.) and special order items are never refundable. Non defective items must be returned within 30 days of the date we shipped to you in order to be eligible for refund. We pay shipping back you your location for all warranty returns. Items that have been damaged due to misuse or abuse, as judged by Tech Instrumentation are never eligible for a refund.

Refused/Undeliverable shipments: We will refund a minimum 75% of the cost of the product less shipping costs (both ways) for shipments that are returned to us as refused or undeliverable. Service charges (repairs, certifications etc.) are warranted but never refundable. Purchaser agrees to pay all charge-back and related costs incurred by us in the event a credit card charge-back is initiated by the purchaser for refused shipments. Please contact us directly and we will refund per our policies.  Shipping and handling charges are not refundable except in the event of an error on our part.

Type: Wireless

Customer Reviews

Based on 17 reviews
Cecil Daniels

Working great

David De Leon Jr

working great

Quick Shipping, Great Pricing & Communication

Tech Instrumentation had the La Crosse Temp Transmitter I needed at the best price found on the interweb. Also shopped their closeout items and picked up a few more things. Shipping charges are very reasonable and received the merchandise 3 days after ordering. Everything was as expected and solved my problem after the new one that came with the clock was damaged with water within the first week of installation (operator error in outdoor placement). T.I.'s email communication throughout the whole process was straight forward and accurate...

Wouldn't hesitate to buy from again!

Tami Snyder
Outside temp sensor

Just like the original one that quit working. Works well until it doesn’t. Glad I found this online.

Roger Williams
Not good

Did not solve my problem

I'm sorry it did not work for you. Sometimes we have customers that order a different sensor than they need or have a defective base unit. Please contact us and we'll be happy to see what we can do to resolve the issue.

Louis Marchetti
TX141V4 La Crosse Replacement sensor

It works like the original. When you put the batteries in you have to give it some time to acclimate. About an hour. Then it started working.

Rich Luxmore
Well done

Order was fulfilled very quickly. Wireless sensor works flawlessly,

Robert Horvath
Replaced TX141V2

It worked. Good price vs. Manufacturer's website.

Bryan M Siedschlag
Works with my older wall clock

My transmitter TX141V3 stopped sending correct temperature so I was surprised to find the transmitter was discontinued. But the newer replacement TX141V4 is working great.

John Davis
Excellent wireless temperature sensor

Once I figured out the red light is suppose to flash once every five minutes or whatever the flash cycle is, and I pushed the button on it and the plus buton on the main unit, it eventually started working. I love it!!!