

💪 Stay ahead of the pack with precision that never quits!
The Polar T31 Coded Chest Transmitter and Elastic Strap delivers reliable, coded 5kHz heart rate transmission compatible with a wide range of Polar monitors and gym equipment. Designed for accuracy, it prevents signal interference from nearby devices. Its slim, lightweight, and water-resistant build ensures comfort and durability during intense workouts. With a robust 2500-hour battery life and adjustable elastic strap fitting chest sizes 25 to 54 inches, it’s engineered for serious fitness enthusiasts seeking dependable heart rate monitoring.

| ASIN | B000ARDPPU |
| Battery Description | Lithium-Ion |
| Battery Life | 2500 Hours |
| Best Sellers Rank | #36,329 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #260 in Electronics & Gadgets |
| Brand | POLAR |
| Brand Name | POLAR |
| Color | Black |
| Compatible Devices | Polar FT2 |
| Country of Origin | United States |
| Customer Reviews | 4.0 4.0 out of 5 stars (2,827) |
| Date First Available | March 12, 2003 |
| EU Spare Part Availability Duration | 1 Years |
| Global Trade Identification Number | 00725882017594, 00725882201351 |
| Included Components | Heart Rate Transmitter |
| Item Dimensions LxWxH | 0.04 x 0.04 x 0.04 inches |
| Item Package Dimensions L x W x H | 12.87 x 2.91 x 0.75 inches |
| Item Weight | 0.09 Kilograms |
| Manufacturer | Polar |
| Material | Elasticized-Fabric |
| Model Name | Polar T31 |
| Model Year | 2006 |
| Package Weight | 0.15 Kilograms |
| Part Number | 92053125 |
| Product Dimensions | 0.04"L x 0.04"W x 0.04"H |
| Screen Size | 54 Inches |
| Sensor Type | ECG |
| Size | 54" |
| Sport Type | Excercise & Fitness |
| Suggested Users | All Ages, Unisex |
| UPC | 725882017594 |
| Warranty Description | 2 year manufacturer |
S**R
Reliable and inexpensive alternative
I have purchased the Polar T31Coded Transmitter and Belt Set from Amazon as a replacement for my old transmitter and belt. Before bying this set, I have considered replacing just the battery itself but the cost and headache for doing it were both not worth it. Also, there was nothing even close in the price range at the Dick's Sporting Goods that I could find as these parts are not being sold by the stores. I have to say that I am NOT using the original wrist watch that came with this set due to the fact that all of the Precor aerobic machines in our gym support this set by directly reading the heart rate from the belt transmitter and displaying it on the console. It is a much better and more convinient option for me not to have to check the wrist watch and play with it so the compatibility with other exercise equipment is something I care about a lot. This product is very reliable as it took over 12 years for a battery to wear-out before I had to replace it. I am strongly recommending this product based on its longevity, durability, quality, compatibility with other equipment, and price affortibility.
A**R
2 year battery life BUT read the whole review
I bought this "NEW" in June of 2016. In July 2018 it started not broadcasting my heart rate for about the first 20 minutes every workout until it gets warm and a little sweaty, then it starts working, slowly coming down from 220 indicated BPM or so to what my actual heart rate is. (my heart doesn't go 220-bpm) There are 25 spinning bikes in the room, it does the same thing ON ALL 25 BIKES, EVERY SINGLE BIKE SAME THING, so it is not the heart rate indicator on "THE BIKE"! I have used Polar HRMs since the 1990s maybe 1980s? Within the last 5 or 10 years or so the battery life has gotten shorter and shorter. Maybe mine sat on the shelf in some department store or in some bike shop for the first 5 or 10 years of its life before I bought it "NEW" from Amazon? I honestly don't know what to do. I have to buy another one because all the equipment i use at the health club (where i work) is Polar compatible. Maybe the non-coded one is cheaper and will last longer, we will see. This is a follow up, March 2019. I tried an experiment for the last month or two. I run the transmitter under water in the sink at the health club for a second or 2, just to make it wet. I put it on wet and i go into the spinning room and it works perfectly the second i turn on the heart rate indicator on the bike. All the way through the workout it works perfectly. SO if you have one that stopped working or works intermittently, run it under water and put it on to see if that makes it work. Maybe it is an indicator that the battery is getting low but this saved me from buying a new one at this time. Good luck!
B**Y
good transmitter
In my experience these Polar T31 transmitters work great... when they have a good battery in them. The problems come up when you buy a "new" transmitter which may have been manufactured 2 years ago? 5 years ago? 10 years ago? Since there is no manufacturing date code on the product you don't know when it was manufactured. Also you don't know if it sat in a warehouse at 120 degrees or other less than ideal battery storage temperatures for all those years. The result is the "new" transmitter may work for a week, two weeks, or two years. That said, it is pretty simple to open one of these with a knife and replace the battery (CR2032), and seal it up with some plastidip or flex-seal. The signal will be good for 12-18 months and works fine with most cardio equipment I have seen in gyms over the years. In fact it's not unusual to see my heart rate show on the machines on either side of me while I'm working out at the gym. I have a Polar 610i wrist monitor I have been using for 20+ years. In that time I have had to purchase three or four replacement T31 coded transmitters and the factory battery has never lasted more than 12 months using it for cardio workouts 3-5 times per week. So I replace the factory battery and typically every 15-18 months thereafter. When the cardio machine has problems receiving the signal I know it's time to replace, even though the wrist monitor is still recieving no problems. Eventually they do stop working and I need to buy another. This purchase (2/1/25) replaces one I purchased around 2016 which has had new batteries installed 5 or 6 times. If you don't want to replace batteries consider some other heart monitor, or spend $35 every time the battery dies.
D**D
Ceinture + émetteur Polaris CODÉ étanche fonctionnant avec une pile scellée d'une autonomie de 2000 à 2500 Heures. Donc autant dire que la longévité est suffisante car vous parcourez en ce temps environ 38 000 km en avirons ; ce qui est conséquent & amplement suffisant -- c'est un tour du monde ! Cette sangle remplace ma précédente qui au bout de 22 ans avait toujours une pile fonctionnelle mais dont le matériau fissurait. Donc pour résumer, cet émetteur vous servira quotidiennement & assurément huit années durant ! Ensuite, ce qui est important -- & à mon sens essentiel --, cet émetteur CODÉ est parfaitement compatible avec le récepteur non-condé Polaris qui équipait jusqu'en 2008 les concept - II - modèle C en Europe (aux US -- modèle codée différent). La compatibilité est avérée bien que ni Polaris ni Concept ne délivrent ce genre d'information ; ce qui est regrettable pour ces marques. Enfin, pour faire fonctionner l'émetteur : il faut soit mouiller, soit humecter avec du gel les récepteurs intérieurs de la bande ; c'est évidemment inutile dans l'eau puisque l'équipement peut aussi servir pour la natation.
M**N
quick delivery, great product
L**E
Funcional con caminadoras
S**I
The product is excellent, but there is a delivery delay that causes it to take longer than expected.
ア**連
POLARの機器に使用してます バッテリー交換は出来ませんが 機器との相性も良いです。
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