Adafruit SHT31-D Sensirion Temp Humidity Sensor Breakout

Overview

The Adafruit SHT31-D Sensirion Temperature & Humidity Sensor Breakout is a precision environmental sensing solution built around the industry-trusted Sensirion SHT31-D sensor. It delivers excellent accuracy of ±2% RH and ±0.3°C, making it ideal for weather stations, HVAC monitoring, indoor air quality systems, data logging, IoT projects, and laboratory applications.

Unlike earlier SHT-series sensors, the SHT31-D features a true I²C interface for simple, reliable communication. It supports two selectable I²C addresses (0x44 or 0x45), allowing you to connect multiple sensors on the same bus. The breakout is fully 3V and 5V logic compatible, so it works seamlessly with Arduino, Raspberry Pi, ESP32, STM32, and other microcontrollers without additional level shifting.

This version includes a PTFE filter membrane over the sensor element. The filter helps protect the sensing surface from dust and contaminants while still allowing accurate humidity measurements, improving long-term reliability in real-world environments.

Specification

Technical details for Adafruit SHT31-D Sensirion Temp Humidity Sensor Breakout

Pinout