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Polar T31 Uncoded Transmitter

by Polar
4.1 out of 5 stars  See all reviews (56 customer reviews)
RRP: 29.95
Price: 22.49 & FREE Delivery in the UK. Details
You Save: 7.46 (25%)
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In stock.
Dispatched from and sold by Amazon. Gift-wrap available.
Want it Saturday, 2 Aug.? Choose Express delivery at checkout. Details
  • Non-coded transmitter unit
  • Works with current models except the CS600 and RS800 but does not eliminate interference (cross-talk) from other units
  • Includes sealed transmitter and elastic strap(M)
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Frequently Bought Together

Polar T31 Uncoded Transmitter + Polar Chest Strap - Spare, S
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Product details

  • Product Dimensions: 36.1 x 8.6 x 2 cm ; 181 g
  • Boxed-product Weight: 141 g
  • Delivery Destinations: Visit the Delivery Destinations Help page to see where this item can be delivered.
    Find out more about our Delivery Rates and Returns Policy
  • Batteries 1 Nonstandard Battery batteries required. (included)
  • Item model number: 92024880
  • ASIN: B000N4N4UG
  • Date first available at Amazon.co.uk: 28 Mar 2010
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (56 customer reviews)
  • Amazon Bestsellers Rank: 2,784 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Product Description

  • Power Source: Battery
  • Junction: uncoded


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews
25 of 26 people found the following review helpful
Verified Purchase
I have an old Polar wrist watch/pulse monitor. I was frightened that when the chest piece-transmitter broke that I would have to buy a complete new kit. I need not have worried as the signal transmission seems not to have altered with fashions. I was very pleased to be able to buy this replacement which works perfectly with my watch. Thank you Polar for looking after your customers.
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10 of 10 people found the following review helpful
2.0 out of 5 stars Great transmitter shame about the battery 3 Jan 2013
By Dangiel
Verified Purchase
The transmitter itself it great, it send reliable heart rate stats to my horizon cross trainer, however the fact you cannot change the battery and have to discard the transmitter is a joke, in the modern day where recycling widespread to require you to discard a perfectly useable device and purchase another due to a battery needing to be changed is ridiculous.
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7 of 7 people found the following review helpful
5.0 out of 5 stars Works fine 21 Jun 2012
Works really well no issue connecting it to any of the equipment at the gym. very easy to put on. Great.
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5 of 5 people found the following review helpful
5.0 out of 5 stars Superb! Great! Just what I wanted! 28 Jun 2012
By D'Hug
Verified Purchase
I purchased this heart rate monitor as all the ones at my gym had disappeared. I didn't want or need anything but that which I ordered. It works both in the gym with the Technogym treadmill and in the spin studio with the Keiser bikes. It is ready to be used and comes with an adjustable belt. I am very happy with my purcahse.As it is mine I don't have the displeasure of someone else's sweat on it. Yippee !
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4 of 4 people found the following review helpful
3.0 out of 5 stars T31 Uncoded polar HRM 10 Jan 2013
By STOCCA
Verified Purchase
I bought this for use with equipment at the gym - notably a Precor treadmill and a STAR TRAC spinner. I decided on the uncoded version as it was cheaper than the coded and had never seen another gym user using a HRM. Before i used it I read that STAR TRAC will only recognise coded straps but was relieved when it did connect and it worked really well - stayed connected. No interference luckily but that was due to spinners being in the far corner of the gym away from most equipment and no other users wearing HRMS.

However on the treadmill my HRM was detected on treadmills both sides of me and I also found the connectivity and measurements were erratic - this could be due to the fact that the HRM was trying to connect to other equipment near by. I would recommend paying a bit extra and buying a coded one.

Also you cant changed the battery on this. When its dead its dead - however you do get 2400hrs / 5 years of use
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9 of 10 people found the following review helpful
1.0 out of 5 stars Short life span 7 Jun 2011
By Mark M
Verified Purchase
Fine to start with, but after only 5 months the battery seems to be dead and, of course, it can't be replaced.
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24 of 28 people found the following review helpful
2.0 out of 5 stars battery not replaceable 28 Nov 2010
Verified Purchase
I bought the Polar T31 as a replacement for one whose battery was depleted. While the product works well I downgrade it because of the manufacturer's designing it so that depleted batteries cannot simply be replaced. The company does make other models (more expensive, naturally) whose batteries can be changed but it is very "un-green" to make any products that need to be thrown away simply because a battery cannot be replaced. As a protest, I will replace the Polar receiver with another company's product when my current Polar transmitter's battery is depleted -- unless Polar changes its policy with regard to non-replaceable batteries.

I should add that the battery to the receiver of the model that comes with the T31 can be changed but the manufacturer recommends that the product be taken to an authorized repairer to effect the change. I managed to do it myself but it wasn't easy and there were no instructions in the product manual. Again, this is very bad policy and quite anti-consumer. Again, more expensive models are describe as having batteries that can be replaced by the owner. This is bad. I expect better of a Scandinavian manufacturer.
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2 of 2 people found the following review helpful
4.0 out of 5 stars Working properly 13 Mar 2013
Verified Purchase
The Transmitter is working properly. Using Technogym equipment and have not experienced any issue with it.
Good purchase indeed at the right price.
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Most Recent Customer Reviews
4.0 out of 5 stars Essential for monitoring heart-beat
Only problem is the size which at its maximum reach is, after several years, a little too tight. I will replace when the time comes with a larger size that can adjust down.
Published 1 month ago by Philip of Ilkley
5.0 out of 5 stars Works on older running machine.
I was a bit concerned that this may not work as my machine is over 10 years old. No worries though as soon as the treadmill was turned on it started to give a heartrate reading,... Read more
Published 1 month ago by Don L
2.0 out of 5 stars Limited use
I bought this to use with my Horizon treadmill, because my Garmin one had succumbed to the jaws of my dogs. Read more
Published 2 months ago by Jon Hart
4.0 out of 5 stars Works straight out of the wrapping!
Does what is needed without unnecessary fuss.

Easy to put on.

Good straightforward heart-rate monitor which links easily to our equipment
Published 4 months ago by Science Man
1.0 out of 5 stars When the batttery runs out (approx. 3 months) you can't replace it so...
I was extremely pleased with it when it arrived, however the battery doesn't last long at all, because you cannot turn it off, its effectively using the battery even when you... Read more
Published 4 months ago by Sy
5.0 out of 5 stars Polar HR transmitter.
The last unit expired after several years continuous use. Cant really complain. I attempted to replace the battery following a you tube video but failed miserably!
Published 4 months ago by Photogent
4.0 out of 5 stars Good performance
It does what it says it does.
It communicates with the equipment in the gym.
As a person who has a heart bypass, this is very important i.e. Read more
Published 4 months ago by G A Sherry
4.0 out of 5 stars Simple, easy, works fine with a Tunturi R25 Rowing...
......bought this as recommended by the rowing machine booklet Just strap it on your chest as instructions and it works. Read more
Published 5 months ago by D. Gallimore
5.0 out of 5 stars great!
It works great with my Bremshey Cardio Explorer E exercise bike. It's comfortable, affordable and stays in place around your chest. Read more
Published 5 months ago by eno
4.0 out of 5 stars Polar T31 Uncoded Transmitter
It does what it says on the tin. I feel much happier using my cross trainer now that I can accurately monitor my heart rate.
Published 5 months ago by iain mcmurrich
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