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Spectra Symbol 12.7 mm Circular Force sensor

Spectra Symbol 12.7 mm Circular Force sensor

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  • With higher pressure, the terminal resistance will be low and resistance will be high for low pressure.
  • This force sensor is a two-terminal device and It does not have polarized terminals.
  • The sensor has a pressure-sensitive touch user interface
  • It is a tactile sensor for robotic appendages
  • These sensors have a finger pad for special gloves

Spectra Symbol 12.7 mm Circular Force sensor

This is a force-sensitive resistor with a round, 0.5″ diameter, sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area.

The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. This FSR can sense applied force anywhere in the range of 100g-10kg.

Two pins extend from the bottom of the sensor with 0.1″ pitch making it bread friendly. There is a peel-and-stick rubber backing on the other side of the sensing area to mount the FSR. Just Connect a resistor to form a voltage divider and measure the voltage at the junction to find the force applied.

These sensors are simple to set up and great for sensing pressure, but they aren’t incredibly accurate. Use them to sense if it’s being squeezed, but you may not want to use it as a scale.

This sensor can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi, etc. using an Analog-Digital Converter (ADC).

Check out our entire range of Sensors & Sensor Modules

Also check Square Force-Sensitive Resistor - Original offered by Robocraze. It belongs to the FSR 400 series and specifically, it's the model 406 FSR. This single-zone Force Sensing Resistor is optimized for human touch control in electronic devices such as automotive electronics, medical systems, and industrial and robotics applications


  • Robotics
  • Detect motion or position
  • Medical Devices
  • Detect and qualify press
  • Find the center of force
  • Detect pressure
  • Detect liquid blockage
  • Target contact detection
  • Pressure-sensitive touch user interface

Package Includes:

  • 1 x Spectra Symbol 12.7 mm Circular Force sensor


Brand  Spectra Symbol
Sensor  Force Sensor 
Compatibility  Raspberry Pi, Arduino
Dimensions  0.72″ diameter × 0.02″
Weight  25 grams


Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

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1. What does a force sensor measure?

  • These sensors are excellent for measuring pressure. It converts a mechanical force such as a load, weight, tension, compression, or pressure, into another physical variable, in this case, an electrical output signal that can be measured, converted, and standardized.

2. Where can I use the force sensor?

  • The force sensor has applications in robotics, motion or position detection, medical devices, detecting and qualifying press, finding the center of force, detecting pressure, detecting liquid blockage, target contact detection, and pressure-sensitive touch user interface.