We use cookies in order to personalize your site experience.
FSR402 Round Force Sensor – Force Sensitive Resistor
The FSR402 is a round force-sensitive resistor (FSR) that changes its resistance based on the pressure or force applied to its surface. With a 12.7mm (0.5″) diameter sensing area, this compact and lightweight sensor is ideal for detecting touch, pressure, and force in interactive projects, robotics, musical instruments, medical devices, and more.
It is easy to interface with microcontrollers such as Arduino, Raspberry Pi, and ESP32, making it popular for DIY electronics and human-machine interaction applications.
Key Features
-
Force-sensitive resistor – resistance decreases with increased pressure
-
Round sensing area (12.7mm diameter)
-
Thin and flexible design, easy to integrate
-
Works with analog input on microcontrollers
-
Ideal for touch, weight, and pressure detection
Specifications
| Parameter | Value |
|---|---|
| Model | FSR402 |
| Sensing Area Diameter | 12.7mm (0.5 inches) |
| Force Sensitivity Range | 0.2N – 20N (approx. 20g to 2kg) |
| Resistance Range | >1MΩ (no pressure), ~2kΩ (max force) |
| Thickness | ~0.5mm |
| Activation Time | <1 millisecond |
| Operating Voltage | 0 – 5V |
Package Includes
-
1 × FSR402 Round Force Sensor
🔧 Tip: Use a simple voltage divider circuit to read varying force levels via an analog pin on your Arduino or MCU.
