The Adafruit AHT20 is an affordable I2C temperature and humidity sensor from the makers of the popular DHT22. It delivers reliable readings with standard I2C communication, making it easy to use with any Arduino, Raspberry Pi or other microcontroller.

This STEMMA QT version features solderless connectors for plug-and-play setup — just connect a STEMMA QT cable and start reading data immediately. No soldering required.

Key Features

• Humidity Sensor – ±2% relative humidity typical accuracy
• Temperature Sensor – ±0.3°C typical accuracy
• I2C Interface – Standard I2C communication, compatible with Arduino and CircuitPython
• STEMMA QT / Qwiic Connectors – Solderless I2C connection on both sides for daisy-chaining
• Continuous Reading – Take sensor readings as often as needed

Ideal For

• Indoor environmental monitoring
• Weather stations
• HVAC and climate control projects
• Data logging applications

Package Contents

• 1× Adafruit AHT20 Temperature & Humidity Sensor Breakout with STEMMA QT