Fermion: SHT31-F Digital Temperature & Humidity Sensor (Breakout, I2C)

The Fermion SHT31-F Digital Temperature and Humidity Sensor Breakout provides factory-calibrated environmental readings over an I2C interface. Equipped with an IP67-rated PTFE filter membrane, it maintains high precision even in dusty or damp conditions. It is well suited to students, makers, and engineers developing IoT weather stations, agricultural monitors, and smart home automation.

High-accuracy CMOSens technology

Built around Sensirion's SHT31-F IC, this module combines capacitive humidity sensing and band-gap temperature detection with on-chip signal conditioning. It delivers typical accuracies of ±2%RH across 0%RH to 100%RH at 25°C and ±0.2°C from 0°C to 90°C without requiring external calibration routines.

IP67 PTFE protective membrane

An integrated PTFE membrane shields the sensing opening from water spray, droplets, and airborne dust particles. Thanks to high water-vapour permeability, the sensor retains fast response times and dependable accuracy in challenging agricultural and outdoor monitoring installations.

Broad controller compatibility

Operating across a 2.15V to 5.5V supply range, the breakout is fully compatible with both 3.3V and 5V logic levels. It communicates via standard I2C, enabling quick integration with microcontrollers such as Arduino, micro:bit, and ESP32.

Sensor performance comparison

The module offers low power consumption, strong resistance to electromagnetic interference, and long-term operating stability. The comparison overview illustrates its measurement performance relative to other digital temperature and humidity sensors.

SHT3x series comparison

The SHT3x product family offers diverse precision ratings and feature sets for environmental data logging. Check the comparison chart to evaluate how the SHT31-F aligns with your project requirements.

Compact footprint and hardware

Measuring only 19 mm by 16 mm with a 15 mm mounting hole pitch, the board easily fits into compact enclosures. The package includes one SHT31-F breakout board and a 2.54 mm 6-pin header for breadboard prototyping.

Downloads & documentation

• Product wiki (DFRobot)