AHT20 White Shell Built-in Cotton Core Sensor with Card Holder - 1m Cable, I2C Digital Output

The AHT20 module operates from 3V to 5.5V DC. This wide range allows direct compatibility with both 3.3V systems (like Raspberry Pi or ESP32) and 5V systems (like most Arduino boards) without requiring a logic level converter.

The sensor communicates via the I2C protocol. Connect the VCC, GND, SDA, and SCL pins to your microcontroller's corresponding I2C bus. Use a standard I2C library (like Wire.h for Arduino) to initiate communication and read the calibrated temperature and humidity data registers provided by the sensor.

The white plastic shell provides mechanical protection. The built-in cotton core acts as a basic filter, helping to prevent dust and larger airborne particles from directly contacting the sensitive MEMS sensing element inside, which can help maintain long-term accuracy in dusty environments.

Yes, the AHT20 is factory calibrated. Each sensor undergoes individual calibration during production, and the calibration coefficients are stored in its onboard non-volatile memory. This provides accurate out-of-the-box performance, and user calibration is typically not required.

The cable terminates in a standard 4-pin female connector. The product listing indicates compatibility with common 2.54mm pitch headers (XH2.54, XHB2.54) and a 2.0mm pitch option (BH2.0), offering flexibility for different prototyping breadboards or permanent installations.