---
product_id: 733110510
title: "Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill"
brand: "north pole engineering"
price: "$U15678"
currency: UYU
in_stock: false
reviews_count: 5
category: "North Pole Engineering"
url: https://www.desertcart.uy/products/733110510-running-retrofit-smart-treadmill-sensor-turn-your-treadmill-into-smart
store_origin: UY
region: Uruguay
---

# Dual Bluetooth & ANT+ connectivity Up to 15 hours rechargeable battery life Real-time speed, cadence & incline tracking Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill

**Brand:** north pole engineering
**Price:** $U15678
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Upgrade your treadmill IQ and never miss a beat!

## Quick Answers

- **What is this?** Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill by north pole engineering
- **How much does it cost?** $U15678 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/733110510-running-retrofit-smart-treadmill-sensor-turn-your-treadmill-into-smart)

## Best For

- north pole engineering enthusiasts

## Why This Product

- Trusted north pole engineering brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Tracking:** Accurate speed within 0.1 mph and incline within 0.5% grade for data-driven training.
- • **Seamless App Integration:** Sync effortlessly with Zwift, Kinomap, Peloton, Garmin, and more for immersive workouts.
- • **Smart Upgrade in 5 Minutes:** Transform any treadmill into a connected fitness powerhouse without buying new equipment.
- • **Apple Watch Heart Rate Sync:** Broadcast your heart rate directly from Apple Watch Series 2+ to your favorite fitness apps.
- • **Long-Lasting Rechargeable Battery:** Enjoy up to 15 hours of uninterrupted smart treadmill sessions on a single charge.

## Overview

The Running... Retrofit Smart Treadmill Sensor is a compact, easy-to-install device that converts almost any treadmill into a smart fitness machine. Featuring dual Bluetooth and ANT+ connectivity, it streams real-time speed, incline, cadence, and heart rate data (via Apple Watch) to popular fitness apps like Zwift and Peloton. With up to 15 hours of rechargeable battery life and precise tracking accuracy, it empowers professional runners and fitness enthusiasts to elevate indoor training without replacing their treadmill.

## Description

Would you like your treadmill was a smart treadmill? The Runn Smart Treadmill Sensor instantly elevates the IQ of the treadmill installed by providing both ANT+ and Bluetooth connectivity. Installation takes only 5 minutes. Run works with almost any treadmill. Run can accurately track speed, tilt and cadence after installation and connect to your favorite apps or smart devices. Run, Connect It's that simple. No need to buy a new treadmill to record your indoor ride. The Run Smart Treadmill Sensor (NPE Runn) installs easily on your existing treadmill and acts as a foot pod but connects speed, incline, and cadence. Use Run to connect your Apple Watch heart rate to the treadmill to capture heart rate, speed, pace, distance, incline, cadence and more on your Apple Watch. For any questions or support, please email support@npe-inc.com

Review: Works with my 20 year old treadmill to feed speed and incline numbers to the peloton app. Speed seems accurate within 0.1 mph. For incline I finally realized that both my treadmill and the peloton app report incline as percent (grade), not degree. Now the accuracy is within 0.5 units. As others say, the stickers fall off very quickly. I got a white sharpie and drew the lines in. Works great.
Review: Works very well. I use it paired to my Garmin watch and it’s accurate and reliable. One star knocked off because the battery can suddenly drain very fast. I leave it continually in charge now.

## Features

- RUNN links almost any treadmill to your favorite fitness apps or devices
- 【Broadcast speed, tilt and cadence to the app via Bluetooth or ANT+
- 【Heartbeatz Connect Apple Watch App】Connect your Apple Watch Series 2+ heart rate to the fitness app
- Rechargeable Micro USB Cable, VHB Deck Tape, Deck Clip, Cleaning Wipes
- Charging interval up to 15 hours
- Works well with Zwift & Kinomap running applications and many other applications
- Product support @npe-inc.com

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CFWNX4L6 |
| Amazon Bestseller | #311,665 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #113 in Heart Rate Monitors (Sports & Outdoors) |
| Batteries Included | Yes |
| Color | Black |
| Customer Reviews | 3.6 3.6 out of 5 stars (59) |
| Date First Available | August 29, 2023 |
| Material | Plastic |
| Maximum Weight Recommendation | 108.86 kg |
| Model Number | Runn |
| Product Dimensions | 9.22 x 9.53 x 5.08 cm; 99.22 g |
| Sport Type | Exercise & Fitness |
| Use Object | Adult |

## Product Details

- **Brand:** North Pole Engineering
- **Color:** Black
- **Item Weight:** 3.5 Ounces
- **Product Dimensions:** 9.2D x 9.5W x 5.1H cm
- **Product Grade:** Brand New

## Images

![Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill - Image 1](https://m.media-amazon.com/images/I/41EtBrNN4CL.jpg)
![Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill - Image 2](https://m.media-amazon.com/images/I/51I+5iWr2CL.jpg)
![Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill - Image 3](https://m.media-amazon.com/images/I/71M+NOIRMtL.jpg)
![Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill - Image 4](https://m.media-amazon.com/images/I/71fZJzMRmdL.jpg)
![Running... Retrofit Smart Treadmill Sensor - Turn your treadmill into a smart treadmill - Image 5](https://m.media-amazon.com/images/I/91YjGbEnL5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***C on February 8, 2024*

Works with my 20 year old treadmill to feed speed and incline numbers to the peloton app. Speed seems accurate within 0.1 mph. For incline I finally realized that both my treadmill and the peloton app report incline as percent (grade), not degree. Now the accuracy is within 0.5 units. As others say, the stickers fall off very quickly. I got a white sharpie and drew the lines in. Works great.

### ⭐⭐⭐⭐ Review
*by T***I on December 27, 2025*

Works very well. I use it paired to my Garmin watch and it’s accurate and reliable. One star knocked off because the battery can suddenly drain very fast. I leave it continually in charge now.

### ⭐⭐⭐⭐ Review
*by P***J on November 26, 2024*

Easy to set up and worked immediately. Takes a few minutes to calibrate the speed of the treadmill with the Zwift run application. I found it gets around 90% accuracy. The problem with it is that it occasionally turns itself off in the middle of a run. You know it has happen because your Zwift Atavar will stand still while you are still running. Its a bit annoying having to slow the treadmill, jump off, turn the sensor on again, jump back on and get back up to speed. When its bad it may happen every 2Ks. Given I am old and only run 5Ks I try to think of it as a stop to have a drink.😅

## Frequently Bought Together

- Runn... Retrofit Smart Treadmill Sensor - Make Your Treadmill a Smart Treadmill!
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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-27*