FSR406 Square Force Sensor | Sensitive 38.1mm Pressure Sensor for Arduino Robotics & Touch Detection

The FSR406 Square Force Sensitive Resistor is a thin-film pressure sensor designed to detect force, pressure, touch, and weight changes with high sensitivity and reliability. Featuring a square active sensing area of approximately 38.1mm, this ultra-thin force sensor is ideal for robotics, touch interfaces, medical devices, automation systems, and interactive electronics projects.

The sensor works by changing its resistance when pressure is applied to the sensing surface. Its lightweight and flexible design makes it easy to integrate into compact devices and embedded systems. The FSR406 sensor supports accurate and repeatable force detection, making it suitable for Arduino, ESP32, Raspberry Pi, and other microcontroller-based applications.

Built with durable polymer thick film technology, this sensor can withstand millions of actuations while maintaining stable performance.

Features

• Square-shaped force sensitive resistor sensor
• Approx. 38.1mm active sensing area
• Ultra-thin flexible film design
• Detects pressure, touch, and applied force
• Fast response and high sensitivity
• Lightweight and easy to integrate
• Durable design with long operational life
• Compatible with Arduino, ESP32, Raspberry Pi, and other controllers

Specifications

• Model: FSR406
• Sensor Type: Force Sensitive Resistor (FSR)
• Shape: Square
• Active Area: Approx. 38.1mm
• Thickness: 0.45mm
• Technology: Polymer Thick Film (PTF)
• Force Detection Range: 20g – 10Kg
• Interface: Analog Resistance Output

Applications

• Robotics and automation
• Touch-sensitive controls
• Human-machine interface systems
• Medical monitoring equipment
• Pressure-sensitive switches
• Smart electronics projects
• Interactive devices and gaming controls
• DIY Arduino and IoT projects