Adafruit Sensirion SHT41 Temperature & Humidity Sensor

The Adafruit Sensirion SHT41 is a high-accuracy temperature and humidity sensor with a true I2C interface, part of Sensirion's fourth-generation SHT4x family. Compared to the SHT40, the SHT41 offers significantly better accuracy across the full humidity range — ±2% typical over 0–100% RH versus the SHT40's ±3% worst case, and a maximum error of ±3% versus ±6%.

The breakout includes a voltage regulator and level shifting, making it compatible with both 3.3 V and 5 V systems. STEMMA QT / Qwiic connectors allow solderless hookup, and Arduino and CircuitPython libraries are available for quick integration.

Key Features

• Relative Humidity Accuracy – ±1.8% RH typical (25–75% RH), ±2% typical over full 0–100% RH range
• Temperature Accuracy – ±0.2 °C typical (0–75 °C)
• Improved Full-Range Accuracy – Max ±3% RH error versus ±6% on the SHT40
• True I2C Interface – Address 0x44, fast mode plus with CRC checksum
• Ultra-Low Power – Ideal for battery-powered applications
• Variable Power Heater – Built-in heater for defogging and self-testing
• 3.3 V / 5 V Compatible – Onboard voltage regulator and level shifting
• STEMMA QT / Qwiic Connectors – Solderless I2C connection and daisy-chaining

Also Consider

• SHT40 Sensor – Lower-cost option with similar typical accuracy at 25–75% RH but reduced full-range accuracy

Ideal For

• Environmental monitoring and weather stations
• HVAC and climate control systems
• Indoor air quality and comfort monitoring
• Data logging and scientific experiments

Package Contents

• 1× Adafruit Sensirion SHT41 Temperature & Humidity Sensor Breakout
• 1× Header strip (soldering required for breadboard use)