DFRobot Gravity: AHT20 Temperature And Humidity Sensor Digital Sensor With I2C Interface For Advanced MEMS Technology

Description:

The AHT20 is a cutting-edge digital temperature and humidity sensor module that leverages an upgraded MEMS semiconductor capacitive sensing element for superior accuracy and stability. This sensor features a standard I2C communication interface, enabling seamless integration with microcontrollers and other digital systems. Its wide operating voltage range (2V—5V) and low power consumption make it suitable for battery-powered and embedded applications.

The AHT20 delivers precise temperature and humidity measurements across a wide range of -40℃ to +85℃, making it ideal for applications requiring robust environmental sensing, including HVAC systems, data loggers, and industrial automation.

Specifications:

Module Parameters

• Operating Voltage: DC2V-5V
• I2C Address: 0x38
• Output Signal: I2C
• Dimension: 30mm×20.5mm/1.18×0.81"

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: 0.01℃
• Accuracy Error: ±0.3℃
• Repeatability: ±0.1℃
• Hysteresis: ±0.1℃
• Response Time: minimum 5S, maximum 30S
• Operating Range: -40℃~85℃
• Long-term Drift: ＜0.04℃/yr

Features:

• Standard digital communication.
• Long-term accuracy.
• Fast response, interference resistant.
• Easy, plug-and-play wiring.

Applications:

• HVAC
• Dehumidifier
• Testing Equipment
• Consumer Appliances
• Automobiles
• Automatic Control
• Data Loggers
• Weather Control

Documents:

• Product wiki
• Dimensions
• Circuit Diagram SCH
• 2D Dimensions
• 2D CAD_Dimensions
• 3D STP

Package Included:

1 x DFRobot Gravity AHT20 Temperature And Humidity Sensor