The Sensirion SHT41 Temperature and Humidity Sensor is a high-accuracy, I2C-based sensor perfect for precise environmental measurements. As the fourth generation of Sensirion's temperature and humidity sensors, the SHT41 offers excellent accuracy with a ±1.8% typical relative humidity accuracy from 25% to 75% RH, and a ±0.2°C typical accuracy from 0°C to 75°C.
Compared to its predecessor, the SHT40, the SHT41 offers better performance across the full humidity range, with ±2% RH accuracy from 0% to 100% RH (compared to the SHT40's worst-case typical accuracy of ±3%). Additionally, the SHT41's maximum accuracy is ±3% RH, whereas the SHT40 can go up to ±6%. For those needing even higher precision, the SHT45 is the top choice in the SHT4x series.
This sensor uses a true I2C interface, making it incredibly easy to connect to your projects with just two wires (plus power and ground). It's designed to be 3V and 5V compatible, meaning it can be used with a wide range of microcontrollers and microcomputers.
For easy integration, we’ve designed a breakout board for the SHT41 with pull-up resistors and capacitors. The breakout features STEMMA QT connectors (Qwiic-compatible) for the I2C bus, so you don't need to solder anything—just plug in a compatible QT cable (sold separately).
If you prefer working on a breadboard, each order comes with a fully assembled and tested PCB, along with a small piece of header that you can easily solder in. It's a quick and simple task, even for beginners.
We’ve also developed libraries for both Arduino and CircuitPython/Python, so you can use this sensor with virtually any microcontroller or single-board computer, like the Raspberry Pi. Whether you’re building an IoT weather station or a robotics project, the SHT41 sensor is an excellent choice for accurate environmental data.