AHT21B Temperature and Humidity Sensor Module

The AHT21B Temperature and Humidity Sensor Module is a highly accurate, digital output sensor that combines a precision MEMS capacitive humidity sensor and a standard on-chip temperature sensor, all integrated into a miniature form factor. Designed with an upgraded ASIC chip, the AHT21B offers superior stability, reliability, and performance, especially in harsh and demanding environmental conditions.

This sensor module features I2C communication, making it easy to integrate into a wide range of microcontroller-based applications including Arduino, ESP32, Raspberry Pi, and other IoT or weather-monitoring systems. Each unit is rigorously factory calibrated and tested, ensuring accurate output over time. With its small size and cost-effectiveness, the AHT21B is perfect for compact embedded applications where high precision and reliability are required.

🔧 Key Features

• Advanced MEMS capacitive humidity sensing
• Integrated temperature sensor on-chip
• New-generation ASIC design for enhanced stability
• Factory calibrated for high accuracy
• I2C communication for easy interfacing
• Miniature and cost-effective module

📐 Technical Specifications

📌 Applications

• Environmental monitoring systems
• IoT weather stations and smart homes
• HVAC and air quality control
• Agricultural automation and greenhouses
• Data logging and portable sensor devices

💡 Why Choose This Product?

The AHT21B Sensor Module delivers excellent stability, accuracy, and reliability in a compact form. Whether you’re prototyping a smart sensor or deploying a large-scale IoT solution, the AHT21B provides dependable measurements in real-world, demanding conditions at a cost-effective price.

📦 Package Includes

• 1 × AHT21B Temperature and Humidity Sensor Module