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Polar T31 Transmitter

4.3 out of 5 stars 201 customer reviews
| 41 answered questions

RRP: £34.50
Price: £21.97 & FREE Delivery in the UK. Delivery Details
You Save: £12.53 (36%)
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11 new from £21.97 1 used from £19.65
Coded
  • Coded transmitter unit
  • Works with current models except CS600 and RS800 but only eliminates interference (cross-talk) when used with a coded wrist or head unit
  • Set includes sealed coded transmitter and elastic strap(M)

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£21.97 & FREE Delivery in the UK. Delivery Details In stock. Dispatched from and sold by Amazon. Gift-wrap available.

Frequently bought together

  • Polar T31 Transmitter
  • +
  • Polar FT1 Heart Rate Monitor and Sports Watch
  • +
  • Polar T31 Coded Transmitter Strap
Total price: £60.31
Buy the selected items together

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Style Name: Coded

Product details

Style Name: Coded
  • Product Dimensions: 0.1 x 0.1 x 0.1 cm ; 9 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 C batteries required.
  • Item model number: 92053125
  • ASIN: B000ARDPPU
  • Date first available at Amazon.co.uk: 19 Aug. 2008
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (201 customer reviews)
  • Amazon Bestsellers Rank: 6,817 in Sports & Outdoors (See Top 100 in Sports & Outdoors)

Product description

Product Description

The Polar T31 coded transmitter is slim and light transmitter that is fully water resistant and designed for all weather conditions. Its purpose is to transmit your heart rate to your wrist unit accurately, without cross talk.

Box Contains

  • T31 transmitter
  • Fabric elastic strap

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style: Uncoded Transmitter with elastic strap 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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Style: Coded Verified Purchase
Having opened the previous one that had failed after many years of use, I opened it and found the device to be powered by a standard CR 25 battery. The device is cynically designed to make changing that battery almost impossible. Very bad show and environmentally sinful. There should be some means of legally forcing manufacturers to provide for replacement of service parts.
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Style: Coded Verified Purchase
We cannot go to the gym without our Polar Heart monitors. These work well with most electronic exercise equipment. I watch my heart rate instead of the machine intensity. It makes it easy to keep a steady pace that keeps me in my personal heart rate zone that is good for me. It gives a constant reading without having to grab the heart monitor handles. Washable. I had my first one for about 15 years. I would still be using it, but I accidentally left it somewhere. I replaced it with exactly the same monitor. Great product with a great price. So worth it!!!!!!
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Style: Uncoded Transmitter with elastic strap Verified Purchase
My son bought me the whole set a few years ago but I noticed that the watch was losing the signal during cycle rides and in the gym. I was hoping to avoid the purchase of a whole new system so bought this item. Delivered within one day using the prime system and worked immediately.
Obviously this product not only works with the Polar watch but with most cardio machines at the gym. A good product well worth buying
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Style: Coded Verified Purchase
I got this as my T31 strap stopped working with my Polar HRM after about 2 years. I thought I would have to sync or somehow configure the watch to accept the new strap but it started working as soon as I put it on. Neat!

For anyone having problems just remember to wet the hatched areas that go against your skin. I give them a quick lick which does the trick.
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Style: Coded Verified Purchase
Does exactly what it's supposed to and seems to work fine with various pieces of gym cardio equipment.
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Style: Uncoded Transmitter with elastic strap Verified Purchase
As per reviews by other, the fact that they don't let you change the battery is nothing short of ecologically irresponsible. Bad, bad Polar.
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Style: Uncoded Transmitter with elastic strap Verified Purchase
Bought this product and was happy with it until found it doesn't work with my monitor (FT4) so adding this review/link so people can check it works with their product before buying

[...]

Also it connected to Gym machines fine, but again the fact you can't change the battery is a bit poor.
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