Guide to E-Bike Sensor Types and Comparison

E-bikes come in variations: fully electric bicycles and electrically-assisted ones. Fully electric bikes are like motorcycles, while electrically-assisted bikes incorporate sensors in the pedal section. These sensors transmit your pedaling information to the controller, offering assisted forward motion. In this article, we’ll delve into e-bike sensor types, comparing their advantages and disadvantages to assist you in choosing the right e-bike for your needs.

Understanding E-Bike Sensors

E-bike sensors are mounted at the pedal section, relaying essential information like pedaling frequency and force to the controller. This data helps the controller adjust the motor’s torque or power, optimizing the assist rate and enhancing the bike’s range.

Classification and Working Principle of E-Bike Sensors

Currently, power bike sensors broadly fall into two categories: speed e-bike sensors and torque e-bike sensors.

Speed E-Bike Sensors measure pedaling frequency, determining the assistance level based on pedaling speed. Faster pedaling equals stronger assistance, and vice versa. On the other hand, Torque E-Bike Sensors measure pedaling force. They come in torque and pressure types, accurately transmitting the cyclist’s force exerted on the pedals.

Pros and Cons of Speed E-Bike Sensors


  • Instantaneous maximum power output.
  • Provides constant, smooth boost output.
  • Simplicity and durability compared to torque sensors.


  • More power-hungry compared to torque sensors.
  • May lead to over-assistance in fast rides.


  • Relies on a single assistance sensing mode, affecting adaptability in changing riding conditions.

Pros and Cons of Torque E-Bike Sensors


  • Most power-efficient motor system.
  • Offers precise control based on pedal speed.
  • Enhances safety by enabling easy speed control with pedal speed adjustments.


  • Higher production cost.

Comparison Between Torque and Speed E-Bike Sensors

Torque sensors excel in precision and complexity, ideal for mountain bikes and climbing scenarios where pedaling force outweighs speed. On the other hand, speed sensors, with their simple structure and cost-effectiveness, suit urban and road bikes better.

Advanced e-bikes predominantly use torque sensors due to their sensitivity to pedaling force changes, providing realistic feedback in various riding conditions.

Choosing the Right E-Bike Sensor

Consider your preferences and requirements while choosing an e-bike sensor. Ensure that the chosen product meets IP65 waterproof and dustproof grades and complies with CE, EN15194, ISO13849-1, EMC, and ROHS standards.

E-bike sensors are crucial components influencing riding experience. Whether you opt for speed or torque sensors, both offer distinct advantages suitable for different riding scenarios.