We are now open for walk-in purchase but you can still place an online order in advance to save time.
Shipping of online order is unaffected. Delivery may be delayed due to carrier backlog. Sorry for the inconvenience.

Interlink Force Sensing Resistor 400 FSR (0.3" Circle)

The model 400 FSR is a single-zone Force Sensing Resistor optimized for use in human touch control of electronic devices such as automotive electronics, medical systems, and in industrial and robotics applications. FSRs are two-wire devices. They are robust polymer thick film (PTF) sensors that exhibit a decrease in resistance with increase in force applied to the surface of the sensor. It has a 5.1mm diameter active area and is available in 4 connection options. Interlink Electronics FSR 400 series is part of the single zone Force Sensing Resistor family.

Features and Benefits

  • Actuation force as low as 0.1N and sensitivity range to 20N
  • Easily customizable to a wide range of sizes
  • Cost effective
  • Ultra thin
  • Robust: Up to 10 million actuations
  • Simple and easy to integrate


  • Overall length: 1.75"
  • Overall width: 0.28"
  • Sensing area: 0.3"


  • Detect & Qualify Press
    Sense whether a touch is accidental or intended, by reading force
  • Use force for UI feedback
    Detect more or less user force, to make a more intuitive interface
  • Enhance tool safety
    Differentiate a grip from a touch, as a safety lock
  • Find centroid of force
    Use multiple sensors to determine centroid of force
  • Detect presence, position or motion
    of a person or patient in a bed, chair or medical device
  • Detect liquid blockage
    Detect tube or pump occlusion or blockage by measuring back pressure
  • Many other force change detection applications

We Also Recommend