Adafruit HTU31 Temperature & Humidity Sensor Breakout Board - STEMMA QT / Qwiic

The Adafruit HTU31-D is the third generation temperature-humidity sensor from TE, offering excellent accuracy and intelligent features for temperature and humidity sensing applications. It serves as a refined upgrade to the popular HTU21-D sensor and provides a reliable and cost-effective alternative to common DHT series sensors.

This sensor features I2C digital communication with typical accuracy of ±2% relative humidity from 20% to 100% RH within 0 to 70°C temperature range, and temperature accuracy of ±0.2°C from -0 to 100°C. It includes an onboard heater for evaporation of condensation and offers CRC-checked data reads for increased reliability.

Additional features include a hardware reset pin, an address-select pin (allowing two sensors on one I2C bus), and thermal-isolation cutout to minimize interference from nearby circuitry. The board comes in the handy STEMMA QT format, compatible with SparkFun Qwiic connectors for easy plug-and-play connectivity without soldering.

Each PCB breakout kit includes a fully assembled and tested sensor board with a small piece of header that can be soldered for breadboard use.

• I2C address selectable: 0x40 or 0x41
• Compact PCB: 25.5mm x 17.7mm x 4.6mm (1.0" x 0.7" x 0.2")
• Weight: 1.6 grams
• Compatible with 3.3V to 5V logic levels
• STEMMA QT compatible for chainable sensor connections