Asair AHT21B Temperature & Humidity Sensor -40~+80°C, 0~100%RH, I2C Digital Output
The Asair AHT21B is a high-precision digital temperature and humidity sensor module featuring an improved MEMS capacitive sensing element and integrated ASIC. It provides fully calibrated I2C digital output and is compatible with 3.3V/5V microcontroller systems like Arduino, Raspberry Pi, and ESP32.
Features
- High-Accuracy Digital Sensing: Delivers temperature readings with ±0.5°C accuracy and relative humidity with ±3% RH accuracy at 25°C.
- Wide Operating Range: Measures temperature from -40°C to +80°C and humidity from 0% to 100% RH.
- I2C Digital Interface: Provides fully calibrated, processed digital output via a standard I2C communication protocol for easy integration.
- Broad Voltage Compatibility: Operates from a 2.2V to 5.5V DC supply, supporting both 3.3V and 5V logic systems.
- Robust Performance: Features excellent long-term stability and fast response, designed for reliable operation in demanding environments.
Out of stock
The Asair AHT21B sensor integrates a next-generation MEMS semiconductor capacitive humidity sensing element and a precision on-chip temperature sensor, driven by a dedicated ASIC. This design delivers significantly enhanced performance and reliability compared to previous generations, ensuring stable operation even under harsh conditions. Each unit is factory-calibrated and tested, providing ready-to-use digital data.
The sensor outputs fully compensated digital signals for both temperature and humidity via the I2C bus, eliminating the need for external signal conditioning. Its miniaturized form factor and optimized design offer a high-value performance-to-cost ratio for a wide range of environmental monitoring applications.
Additional Information
| Weight | 0.01 kg |
|---|---|
| Dimensions | 6 × 7 × 1 cm |
