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Front of AHT20 temperature & humidity sensor module with LEDs and connector for Arduino.-DFRobot product sku:SEN0528 image.
Overhead shot of AHT20 temperature and humidity sensor module with LEDs and microcontroller, dimensions marked.
Front of AHT20 temperature & humidity sensor for Arduino
Front of AHT20 temperature and humidity sensor with multi-colored cable and yellow circular elements.
Front of AHT20 temperature humidity sensor module with visible components
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Gravity: AHT20 Temperature and Humidity Sensor

$3.90
SKU: SEN0528
High-precision, low-cost temperature and humidity sensor with I2C interface, operates at 2V-5V, suitable for various applications like HVAC and automobiles.
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IntroductionFeaturesApplicationsSpecificationShipping List Documents Resource Review

Introduction

The AHT20 is a high-precision but low-cost temperature and humidity sensor, which is equipped with an improved MEMS semiconductor capacitive humidity sensor element. It features standard I2C interface and a wide voltage supply of 2V-5V. And with the simple peripheral circuit, it performs stably even in harsh environments in the measuring range of -40℃ ~ ＋85℃.

This sensor can be widely used for measuring the environmental temperature and humidity of home electronic equipment, the temperature and humidity of automobiles, and so on.

Gravity: AHT20 Temperature and Humidity Sensor

Connection Diagram

Features

  • Digital output, I2C interface
  • Excellent long-term stability
  • Fast response, strong anti-interference, and adaptability
  • Gravity interface, simple wiring, no soldering required

    • Applications

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

    • Specification

    Module Parameters

  • Operating Voltage: DC2V-5V
  • Output Signal: I2C
  • I2C Address: 0x38
  • 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

    • Shipping List

  • Gravity: AHT20 Temperature and Humidity Sensor × 1
  • Gravity-4P I2C/UART Sensor Cable × 1

    • Documents

    Resource

    AllProjectsBlogTutorialCourseMedia
    Smart Solar Plant(Environment monitoring)

    Projects Smart Solar Plant(Environment monitoring)

    portrait
    RAJESHKT
    May 17, 2024

    Review

    Niklas.Melchert Sep 29, 2026

    Not the most precise sensor but works for its purpose

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    Gravity: AHT20 Temperature and Humidity Sensor
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