The FSR 402 model 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. Its active area is 14.7mm in diameter, and the sensor is available with four connection options. Interlink Electronics FSR 400 series is part of the single zone Force Sensing Resistor family.