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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