Product Overview
The AHT Series Temperature and Humidity Sensor Module combines advanced sensing technology with a compact design to deliver reliable environmental monitoring for modern electronics projects.
Available in AHT10, AHT20, AHT21B, and AHT25 variants, these digital sensors provide accurate temperature and humidity measurements using a convenient I2C communication interface. Their low power consumption, fast response time, and factory calibration make them ideal for both hobbyist and professional applications.
Whether you’re building an IoT weather station, smart greenhouse, indoor air quality monitor, or industrial monitoring system, the AHT sensor family offers dependable environmental data with minimal programming complexity.
Key Features
High Measurement Accuracy
Provides precise temperature and relative humidity readings suitable for environmental monitoring and automation systems.
Digital I2C Interface
Simple two-wire communication enables easy integration with:
- ESP32
- ESP8266
- Arduino
- Raspberry Pi
- STM32
- RP2040
- MicroPython platforms
Factory Calibrated
Pre-calibrated for consistent and reliable measurements without requiring additional adjustments.
Low Power Consumption
Suitable for battery-powered devices, portable sensors, and long-term IoT deployments.
Compact Design
Small form factor makes installation easy in compact electronic projects and embedded systems.
Fast Response Time
Provides quick environmental feedback for automation and monitoring applications.
Applications
The AHT sensor module is ideal for:
- Smart Home Automation
- Indoor Climate Monitoring
- Weather Stations
- Greenhouse Automation
- HVAC Systems
- Air Quality Monitoring Platforms
- Industrial Environmental Monitoring
- IoT Sensor Nodes
- Robotics Systems
- Educational Electronics Projects
- AI-Powered Environmental Analytics
Benefits
For Beginners
- Easy wiring using I2C
- Simple programming libraries
- Excellent learning platform for sensor integration
- Ideal for STEM education projects
For Makers
- Reliable sensor performance
- Compact footprint
- Supports rapid prototyping
- Works with popular development boards
For Engineers
- Factory-calibrated measurements
- Stable digital output
- Low power operation
- Suitable for commercial prototypes
For Educators
- Excellent teaching tool for:
- Sensor technology
- Embedded programming
- Data acquisition
- IoT systems development
Technical Highlights
- Temperature sensing
- Relative humidity sensing
- I2C digital communication
- Factory-calibrated output
- Low power consumption
- High reliability
- Compact PCB module
- Wide microcontroller compatibility
Why Choose This Product?
The AHT Series sensors offer an excellent balance of accuracy, affordability, reliability, and ease of integration. Compared to many traditional analog sensors, they provide stable digital measurements with minimal wiring and programming effort.
Whether you are developing a commercial IoT solution, creating a smart home device, or learning embedded systems, the AHT sensor family delivers professional-grade environmental monitoring in a compact and cost-effective package.
Beginner Projects
- Digital Thermometer
- Indoor Weather Station
- Smart Fan Controller
- Home Climate Monitor
- Arduino Sensor Projects
- ESP32 Temperature Dashboard
Professional Projects
- Industrial Monitoring Systems
- Smart Agriculture Solutions
- HVAC Monitoring
- Environmental Data Logging
- IoT Cloud Monitoring Platforms
- AI Environmental Analytics Systems
4. Key Features
- High-precision temperature measurement
- Accurate humidity sensing
- Digital I2C communication
- Factory calibrated
- Low power consumption
- Fast response time
- Compact module design
- Wide voltage compatibility
- Compatible with Arduino and ESP32
- Suitable for battery-powered devices
- Stable long-term performance
- Easy integration into IoT projects
5. Specifications
| Specification | Details |
|---|---|
| Sensor Type | Digital Temperature & Humidity Sensor |
| Available Models | AHT10, AHT20, AHT21B, AHT25 |
| Operating Voltage | 2.0V – 5.5V DC |
| Communication Interface | I2C |
| Temperature Measurement Range | -40°C to +85°C |
| Humidity Measurement Range | 0% to 100% RH |
| Temperature Accuracy | Up to ±0.3°C (model dependent) |
| Humidity Accuracy | Up to ±2% RH (model dependent) |
| Power Consumption | Ultra-Low Power |
| Operating Frequency | I2C Standard/Fast Mode |
| Dimensions | Approx. 15 × 10 mm |
| Weight | Approx. 2 g |
| Compatibility | ESP32, ESP8266, Arduino, Raspberry Pi, STM32, RP2040 |
| Calibration | Factory Calibrated |
6. Applications
Smart Home Projects
- Climate monitoring
- Smart thermostats
- Automated ventilation systems
- Home Assistant sensors
Robotics
- Environmental sensing
- Mobile robot monitoring
- Smart robotic platforms
Industrial Automation
- Warehouse monitoring
- Equipment environment monitoring
- Process control systems
Environmental Monitoring
- Weather stations
- Indoor air monitoring
- Greenhouse automation
- Agricultural sensing
Educational Projects
- STEM learning
- Sensor interfacing tutorials
- Embedded systems training
AI Edge Computing
- Edge environmental analytics
- Predictive monitoring systems
- Intelligent sensing platforms
IoT Prototyping
- Cloud-connected sensor nodes
- MQTT monitoring systems
- Wireless weather stations
7. Package Includes
- 1 × AHT Series Temperature & Humidity Sensor Module
- Selected Variant:
- AHT10
- AHT20
- AHT21B
- AHT25

















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