Spectra Symbol Flex Sensor 2.2" - Bend & Position Sensing for Arduino

The Spectra Symbol Flex Sensor (2.2 inch) is a precision resistive sensor that changes resistance when bent — making it the go-to component for detecting finger movement, joint angles, and physical deformation in wearable and robotics projects.

Used in Nintendo Power Gloves, medical devices, and countless maker projects, this sensor is trusted by engineers and hobbyists worldwide for its reliability and repeatability.

Key Features

• Brand: Spectra Symbol (USA) — the original flex sensor manufacturer
• Model: 00522 / 2.2 inch length
• Resistance Range: ~10kΩ (flat) to ~35kΩ (fully bent)
• Flexible Substrate: Thin, durable polyimide film with carbon resistive element
• 2-Pin Through-Hole Connector: Easy to plug into breadboards or solder to PCB
• Unidirectional Sensing: Detects bend in one direction only
• Low Power: Passive component, no power supply needed for sensing

Specifications

• Length: 2.2 inches (55.88 mm)
• Flat Resistance: ~10kΩ
• Bent Resistance: ~35kΩ
• Life Cycle: >1 million bend cycles
• Operating Temperature: -35°C to +80°C

Ideal For

• Arduino & Raspberry Pi projects
• Robotic hand and glove control
• Wearable electronics and prosthetics
• Gesture recognition systems
• Physical therapy and rehabilitation devices