Technical sheet

Sigma Speed sensor

Name: Sigma Speed sensor
Brand: Sigma
SKU: 138893593
Price: 19.99 EUR
Availability: InStock
Rating: 5 (12 reviews)

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12 Reviews

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Features of Sigma Speed sensor

Product description of Sigma Speed sensor

Description summary

Upgrade your ride with the SIGMA STS Wireless Speed Sensor. This essential electronics accessory, falling under the Sensors subcategory, provides incredibly accurate, real-time speed and distance tracking directly from your wheel. Leveraging SIGMA´s robust, digitally coded STS wireless transmission system, it ensures interference-free data for reliable performance analysis, even in challenging environments. Built to be fully waterproof and featuring effortless, tool-free installation, it´s the perfect replacement or upgrade for all SIGMA STS wireless bike computers, empowering you to train smarter and ride further with confidence

SIGMA STS Wireless Speed Sensor | Accurate Speed & Distance Tracking

Unlock the full potential of your SIGMA cycling computer with the official SIGMA STS Wireless Speed Sensor. Engineered for precision and reliability, this essential accessory is the key to capturing accurate, real-time speed and distance data on every ride. Whether you are training for a race, exploring new trails, or commuting to work, this sensor ensures that every single rotation of your wheel is counted and transmitted flawlessly to your head unit, providing you with the critical metrics you need to analyze performance, track progress, and elevate your cycling experience.

The heart of this device is SIGMA’s proven STS (SIGMA TRANSMISSION SYSTEM) technology. This digitally coded, three-channel wireless transmission system guarantees a robust and interference-free connection between the sensor and your bike computer. Ride with confidence in a group or in areas with other electronic signals, knowing that your data is secure and protected from crosstalk, ensuring what you see on your screen is your performance, and yours alone.

Experience the Benefits of Precision Data:

* Flawless & Interference-Free Transmission: Rely on the digitally coded STS wireless protocol for a consistently stable and accurate signal, eliminating data corruption from other sensors or electronic devices.
* Train with Unmatched Accuracy: Move beyond GPS estimates and capture exact speed and distance measurements directly from your wheel. This precision is vital for effective interval training, consistent pacing, and reliable post-ride analysis.
* All-Weather Durability: Built to withstand the toughest cycling conditions, this speed sensor is fully waterproof. Ride through rain, puddles, and mud without ever worrying about compromising its function or the integrity of your data.
* Effortless & Quick Installation: Get back on your bike in minutes. The entire system is designed for a simple, tool-free installation. Using the included durable mounting hardware, the sensor attaches securely to your bike’s fork, getting you set up and ready to ride without any hassle.

This Sigma STS wireless speed transmitter is the definitive replacement or upgrade for a vast range of SIGMA’s lineup. It provides a seamless connection for almost all models of STS wireless bike computers, making it an indispensable part of the SIGMA ecosystem.

Main Features:

* Advanced STS Wireless Technology: Employs the renowned SIGMA TRANSMISSION SYSTEM for secure, digitally coded data transfer.
* Complete Mounting Kit: Includes all necessary handlebar mounts and hardware required for a secure, tool-free attachment to your bicycle´s fork and the magnet to your wheel´s spoke.
* Robust Waterproof Construction: Designed and tested to be fully waterproof, offering dependable performance in any weather condition.

Whether you´re replacing a damaged sensor or completing your new bike computer setup, the SIGMA STS Speed Sensor is the gold-standard choice for serious cyclists who demand accuracy and reliability.

Technical Specifications:

* Product: SIGMA Speed sensor
* Category: Electronics
* Subcategory: Sensors
* Transmission Protocol: SIGMA TRANSMISSION SYSTEM (STS), Digitally Coded Wireless
* Compatibility: All SIGMA STS wireless computer models
* Package Contents: 1x STS Speed Transmitter, 1x Spoke Magnet, Mounting Hardware
* Attributes: Sensors, Speedometers, STS

Specifications

Manual

Technical specifications of Sigma Speed sensor

Wireless Connectivity

STS
Water Resistance Rating

Waterproof
Device compatibility

SIGMA STS wireless computer models
Color

Black
Sensor Type

Speedometers
Product Type

Sensors
Connectivity

STS

Features of Sigma Speed sensor

Color Black

Color

Black

Sensor Type Speedometers

Sensor Type

Speedometers

Product Type Sensors

Product Type

Sensors

Connectivity STS

Connectivity

STS

Key differentiators

Technology in Sigma Speed sensor

Energy rating

Warnings

5 / 5

12 Reviews

What our customers are saying about Sigma Speed sensor

Sigma Bike Computer Sensor This replacement Sigma wireless speed sensor offers excellent performance, working perfectly with Sigma BC 16.12 STS bike computers. Users report easy installation and seamless integration, with some noting the sensor is an updated, improved model that remains compatible with older units. It´s a reliable, high-quality replacement for broken sensors, ensuring no compatibility issues. The sensor is often packaged with mounting clamps and a battery, making it a complete and convenient solution for cyclists looking to outfit a second bike or replace a worn-out part

Excellent product

2026/08/06

yves

Product perfectly suited for my Sigma STS meter. Very easy to install. It works completely right from the start

Supplied with battery

2026/04/30

Nuno

Accessory purchased on the suggestion of SIGMA support because, according to them, it was the previous sensor that had become defective and explained the sudden non-functioning of my BC12 WL after less than 2 years. The new sensor works perfectly (and, probably, the old one too) but the computer still doesn´t work (it doesn´t pick up the STS signal from the sensor). I am going to buy (from BikeINN...) a new complete computer (but no longer SIGMA!)

Wireless Sigma meter sensor

2026/03/24

Jean-Luc

Works with a Sigma 14.16 STS computer Battery included 2 Serflex-type ties provided

Sigma

2025/11/23

Jean-marc

Very good. Good product. Meets my expectations. Works perfectly. Excellent.

Fernando

2025/05/15

fernando

The sensor works perfectly, very satisfied

Usual quality

2025/04/28

I bought the sensor so I could use my Sigma BC 16.12 STS on another bike. Installation is easy, and it works as expected. I was pleased that the sensor has been updated and still works with my old bike computer.

Sygma sensor for sygma 12.0/14.0 meter

2025/02/14

Michel

Article conforms to my expectations. But I did not receive any clamps or battery, as mentioned in other reviews ???? Lots of parts in retail which is very useful. Fast delivery, I recommend this site.

Sensore sigma speed

2024/07/06

Enzo

Excellent product, works perfectly, the package even contains 2 clamps for mounting.

Wireless sigma meter sensor

2024/05/23

Philippe

The sensor works perfectly with the sigma BC 16.12. STS. Comes with a battery

Original spare parts

2024/04/04

Marco B,

Bought one more for my second bicycle, perfect.

Works correctly.

2024/03/22

Javier

The sensor works perfectly with the sigma BC 16.12. STS. Comes with a battery and mounting clamps. It is a more modern model than the one I had. It seems better.

Nickel

2023/02/18

Jean-Marc

this sigma sensor perfectly replaces my original broken sensor. no compatibility issues.

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Include AI Generated questions and answers

2024-02-28

Daniel

So, in the product description says not compatibile with bc 23.16 I have BC 23.16 STS, is it ok for me. In the description says it is not compatible but in the Q&A section it says it's working. Thank you!

Answer of Martin

yes it is compatible with BC 23.16 STS

* Generated by AI based on customer and product data

2024-03-15

Marcel MORAND

Is the sensor compatible with BC 23.16. STS? THANKS.

Answer of Mark

Yes, it is compatible with BC 23.16 STS, also with BC 12.0 wireless.

* Generated by AI based on customer and product data

2024-07-07

Alois

Is the sensor compatible with Sigma BC 14.16 ? The old sensor is model STS- S-3

Answer of Ernst

Yes fits perfectly

* Generated by AI based on customer and product data

2024-02-23

Claudio

Good morning. Does this kit include the magnet to attach to the wheel spoke?

Answer of DECIO

Not included, just the sensor.

Answer of Martin

no, it doesn't have a wheel magnet

Answer of Pierre

no it is not provided

* Generated by AI based on customer and product data

2024-06-09

Andrea

Good morning. Does the speed sensor correspond to the STS 2450? Is it compatible with the BC 14.0 WL model?

Answer of Bozzano

Yes, I confirm. I bought it for the 14.0 WL computer, and it is compatible with the 2450 mount.

Answer of Mark

Sorry I can't help..I only have a wl bc-12.

Answer of MARCO

This is the new model of STS speed sensor. As far as I know, it is compatible with all STS cycle computers (even with the 23.16 by the way, which is what I use

* Generated by AI based on customer and product data

2025-08-28

Paolo

Is this compatible with BC 12.12 Sts? Thanks

Answer of Alain

Yes it is compatible.

* Generated by AI based on customer and product data

2025-07-23

Jan

Good afternoon, I have an old BC 16.12 Sts. Is it compatible with this transmitter? I´ve lost the original.

Answer of Alain

This transmitter is well compatible with BC 16.12

* Generated by AI based on customer and product data

2024-01-15

Alonso Agudelo Olarte

Good morning. Is the speed sensor suitable for the 23.16 model?

Answer of Martin

yes it is compatible

Answer of roberto

It is compatible since they carry the same data transmission technology of the STS

* Generated by AI based on customer and product data

2024-02-13

anto

Hello, is it compatible with bc 12.0 wr wl?

Answer of Martin

compatible is BC 12.0 WL and WL CAD

* Generated by AI based on customer and product data

2024-05-14

Eva

Is it compatible with BC 9.16 ATS and if not is there another compatible model?

Answer of Bozzano

I do not think it is compatible. For the ATS series, the compatible sensor is this one: https://www.tradeinn.com/bikeinn/es/sigma-transmisor-de-velocidad-para-bc-7.16-9.16-ats/136293289/p

Answer of Philippe

The sensor works with my sigma BC 16.12 meter. STS. In addition, it comes with the battery (CR 2032). I am 100% satisfied.

* Generated by AI based on customer and product data

2024-05-20

Julio

Good afternoon. I have the old model sigma targa 2209 and I have lost the sensor. Is this model compatible? Thank you.

Answer of Bozzano

As far as I know, they are both "STS", so it should be compatible. The old sensor for 2209 seems not to be available anymore, by the way.

Answer of Mark

Sorry I only have the sigma bc 12 but according to Sigma it is "compatible with all STS-capable Sigma Sport bike computers"

* Generated by AI based on customer and product data

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Features of Sigma Speed sensor

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Product description of Sigma Speed sensor

Technical specifications of Sigma Speed sensor

Color Black

Sensor Type Speedometers

Product Type Sensors

Connectivity STS

What our customers are saying about Sigma Speed sensor

Use cases

Best for

Benefits

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