GEM RETRO (Treadmill Only)

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GEM RETRO is a plug and play Bluetooth and ANT+ connectivity solution for CSAFE enabled fitness equipment allowing realtime tracking of workout performance with smartphones, tablets, and group fitness leaderboard software. GEM RETRO integrates with CSAFE enabled cardio equipment including, treadmills, stationary bikes, steppers, step mills/stair mills, ellipticals, total body trainers, tread climbers, and rowers.

Certified with FCC, CE, IC, RoHS, and Bluetooth Smart.

Available in U.S.A., Canada, United Kingdom and CE countries.

For international customers: The customer is required to pay a custom/duty fee upon receiving their package. North Pole Engineering is not required to pay this fee. 

Your GEM purchases comes with a limited One Year Warranty.  NPE will repair or replace any unit found to have a manufacturing defect within the warranty period, provided that notification is given within the warranty period and the product is returned to NPE.  The warranty period is determined from initial product shipment date from NPE.  Mishandling of the GEM RETRO is not a manufacturing defect.


Contains IC: 10563A-GEMRET0101

0.20 LBS

Warranty Information

12 Month Limited Warranty: North Pole Engineering will, at our option, repair or replace any product found defective in manufacture within the warranty period. The warranty period determines the initial online registration. If repairs include replacement parts, these parts may be remanufactured or may contain the entire product. It may be replaced with a remanufactured product. Warranty provisions shall not extend the original warranty period. The costs of shipping the product to us for repairs shall be borne by the customer. To elaborate, this warranty does not apply to damage caused by accident, misuse, tampering, use of incompatible accessories, failure to follow operating instructions provided, damage caused by fire, earthquake, flood or damages due to abnormal operating conditions including pollution, salt, gas (sulfides) irregular power voltage, water submersion, or if the product has had its serial number altered or removed. All repairs require a charge. There are no guarantees with all future versions of software and hardware being compatible with this product. Our products are provided as is and North Pole Engineering disclaims all warranties and conditions, either express or implied, including, but not limited to, implied warranties of merchantability, fitness for a particular purpose, title and non-infringement. Any modifications or revisions thereof except in jurisdictions do not allow such exclusions or limitations. North Pole Engineering is not responsible for lost data or information.

5 Reviews

  • Posted by dave campbell on 14th Feb 2021


    GEM retro

    I loved the module so much, I have now purchased 4 of them to install into the csafe port on my 4 life fitness club treadmills. This is the only way to use with zwift since it provides a100% stable never have to think about it interface!!!

  • Posted by John p McFarlane on 9th Dec 2019


    NorthPole/Wahoo GEM

    Works perfectly with my Lifefitness 95!

  • Posted by Alex on 27th Nov 2019


    GEM retrofit

    Works perfect. So much better than dealing with foot pods

  • Posted by Brian on 14th Sep 2018


    Works but not the game changer I was hoping for

    Once you get the GEM Retro configured it does send basic info such as pace and incline to apps like Zwift. I bought this product with expectations that it would be able to control the incline from Zwift as well, meaning that if the course starts to climb on Zwift the treadmill would increase the incline as well. This does not happen. I read an early review from a trusted reviewer (DC Rainmaker) stating that this module would allow incline control so I'm a bit disappointed and it's unclear who, Zwift or NPE, could make this happen. Setup is unclear and there are no instructions in the box. I had to search the web, eventually finding a pdf that walked me through the process. Honestly, I believe a Garmin Foot Pod would do nearly everything that this does at half the price. NPE Response: Hi Brian, I apologize for the issues you’ve experienced. One of our GEM engineers will be contacting you shortly to help with the questions you have. Here is some information that may clear some things up: 1) First and foremost, Zwift didn’t implement equipment control in their software for treadmills. Also, only a few brands allow equipment control through the CSAFE port. 2) We will update our store site to make clearer instructions for these treadmill and bike units. 3) Regarding DC Rainmaker’s article, we did have him correct this statement a few years ago when the review was originally posted. It is a footnote in the article so may have been missed by the reader. Thank you for bringing your concerns to our attention. We will update our website to help provide better instruction for our customers.

  • Posted by dave campbell on 24th Aug 2018


    GEM retro

    I purchased the GEM to use on my Life Fitness Club Treadmill with a csafe port. I connect it to zwift run. Compared to all the other others, the gem is flawless! Never need to worry about power, warmup, accuracy compared to treadmill speed, etc. It just works!! I feel sorry for the folks who spend tons of money on a home treadmill with a fancy display. They could have spent less and got a gym quality treadmill like the LF club and connected the GEM and be off and running.