Gravity: AHT20 Temperature and Humidity Sensor

DFRobot

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SKU:
147-SEN0528
MPN:
SEN0528
Gravity AHT20 temperature and humidity sensor with MEMS sensing technology, I2C interface, 2V to 5V operating voltage, and reliable environmental monitoring performance. View full description
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Technical Specifications

Brand:
DFRobot
Operating Voltage:
2V-5V
Interface:
I2C
I2C Address:
0x38
Dimension:
30mmx20.5mm

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources

High Precision Temperature And Humidity Sensor Module With I2C Interface For Environmental Monitoring

The Gravity AHT20 Temperature and Humidity Sensor is a compact, high-accuracy environmental sensing module designed for reliable temperature and humidity monitoring in consumer, industrial, and IoT applications. Based on an advanced MEMS capacitive humidity sensing element, the AHT20 delivers precise measurements while maintaining low power consumption and cost-effective performance. The sensor features a standard I2C communication interface, enabling seamless integration with Arduino, ESP32, Raspberry Pi, and other embedded platforms.

With a wide operating voltage range of 2V to 5V and a measurement temperature range from -40 C to +85 C, the module performs consistently even in challenging environments. Its simple peripheral circuit requirements reduce design complexity, making it an excellent choice for smart home devices, weather monitoring systems, automotive applications, environmental data logging, and industrial automation projects.

Key Features

  • High Precision Measurement: Accurate temperature and humidity monitoring.
  • Advanced MEMS Sensor Technology: Improved capacitive humidity sensing element.
  • I2C Communication Interface: Simple connection to microcontrollers and development boards.
  • Wide Operating Voltage: Supports 2V to 5V power supply.
  • Wide Temperature Range: Operates from -40 C to +85 C.
  • Stable Performance: Reliable operation in harsh environments.
  • Low Power Consumption: Suitable for battery-powered applications.
  • Compact Module Design: Easy integration into embedded systems.
  • Simple Peripheral Circuit: Reduces hardware design complexity.
  • Cost-Effective Solution: Combines accuracy with economical implementation.

Applications

  • Smart home devices
  • Weather monitoring stations
  • Environmental monitoring systems
  • IoT sensor networks
  • Automotive temperature and humidity monitoring
  • Air conditioning systems
  • Industrial automation
  • Data logging equipment
  • Agricultural monitoring systems
  • Consumer electronics
  • Indoor climate monitoring
  • Educational and development projects
Specifications
 
 
AHT20 Chip Parameters
 
Relative Humidity
  • Resolution: 0.024 %RH
  • Accuracy Error: +-2 %RH
  • Repeatability: +-0.1 %RH
  • Hysteresis: +-1 %RH
  • Non-linear: +-0.1 %RH
  • Response Time: 8S
  • Operating Range: 0~100 %RH
  • Long-term Drift: <0.5 %RH/yr
Temperature
 
  • Resolution: 0.01C
  • Accuracy Error: +-0.3C
  • Repeatability: +-0.1C
  • Hysteresis: +-0.1C
  • Response Time: minimum 5S, maximum 30S
  • Operating Range: -40~85C
  • Long-term Drift: <0.04C/yr

Connection Diagram

Package Contents
  • Gravity: AHT20 Temperature and Humidity Sensorx1
  • Gravity-4P I2C/UART Sensor Cablex1