The FSR 408 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. FSR 408 is available in a range of active lengths including; 610mm (Standard 408), 500mm, 400mm, 300mm, 200mm, 100mm, 50mm. All are available with solder tabs as standard and any of the other available connection methods is offered upon request. Interlink Electronics FSR 400 series is part of the single-zone Force Sensing Resistor family.

https://cdn.sparkfun.com/datasheets/Sensors/Pressure/FSR408-Layout2.pdf