AHT20 Temperature & Humidity Sensor Module – Precision I2C Probe

Upgrade your electronics projects with the AHT20 Temperature & Humidity Sensor Module — a high-precision sensing solution that delivers accurate, real-time environmental readings. A significant step up from the classic DHT11, this module uses the I2C communication protocol for seamless integration with Arduino, Raspberry Pi, ESP32, and other microcontrollers.

Whether you're building a weather station, smart home automation system, data logger, or greenhouse monitor, the AHT20 module provides the reliable readings your project demands.

Key Features

High-Precision Sensing: Accurately measures both ambient temperature and relative humidity for dependable environmental monitoring.
I2C Interface: Simple two-wire communication makes wiring clean and straightforward — ideal for breadboard and PCB projects alike.
Upgraded from DHT11: Improved measurement accuracy and faster response compared to the standard DHT11 sensor.
Compact Module Design: Small form factor fits neatly into enclosures, project boxes, or prototype boards without taking up valuable space.
Wide Compatibility: Works with Arduino, Raspberry Pi, ESP8266, ESP32, STM32, and most other popular development platforms.
Low Power Consumption: Energy-efficient design makes it suitable for battery-powered and IoT applications.
Available in 2 Color Options: Choose the variant that best suits your build aesthetic.

Specifications

Sensor Chip: AHT20
Interface: I2C
Operating Voltage: 2.0V – 5.5V
Temperature Range: -40°C to +85°C
Humidity Range: 0% – 100% RH
Communication Protocol: I2C (compatible with DHT11 upgrade path)
Form Factor: Compact PCB module with precision probe

Perfect For

DIY weather stations & environmental monitors
Smart home automation systems
Greenhouse & grow room climate control
IoT sensor nodes & data loggers
HVAC monitoring & control systems
Electronics hobbyists & makers

Frequently Asked Questions

Q: What is the AHT20 Temperature & Humidity Sensor Module and how does it differ from DHT11?

A: The AHT20 is an upgraded precision temperature and humidity sensor module that communicates via I2C protocol. Compared to the older DHT11, the AHT20 offers significantly improved measurement accuracy, a wider operating range, and faster response times — making it a superior choice for demanding DIY electronics and IoT projects.

Q: Which microcontrollers and development boards are compatible with the AHT20 module?

A: The AHT20 module is compatible with a wide range of popular platforms including Arduino (Uno, Nano, Mega), Raspberry Pi, ESP8266, ESP32, and STM32 boards. Its standard I2C interface ensures broad compatibility, and libraries are readily available for most platforms.

Q: How do I connect the AHT20 module to my project?

A: The module connects via a simple I2C interface using just four pins: VCC (power), GND (ground), SDA (data), and SCL (clock). Connect VCC to 3.3V or 5V, GND to ground, SDA to the data line, and SCL to the clock line on your development board. Then install an AHT20 library in your IDE and you're ready to start reading temperature and humidity values in your code.

Q: What applications is the AHT20 sensor module best suited for?

A: The AHT20 is ideal for a variety of applications including DIY weather stations, smart home climate monitoring, greenhouse environment control, IoT sensor nodes, HVAC monitoring systems, and any project requiring reliable, real-time temperature and humidity data.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.