AHT20 BMP280 3-in-1 Sensor Module Temperature Humidity Pressure I2C for Arduino Environmental Monitoring Weather Station Kit

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All-in-One Environmental Sensing! AHT20+BMP280 3-in-1 Sensor Module for Precise Temp, Humidity & Pressure in Your Arduino IoT Projects.

Key Features & Benefits

3-in-1 High Precision Sensing: Integrates the next-gen AHT20 (Temp & Humidity) and the BMP280 (Pressure & Temp) sensors to simultaneously and accurately acquire three key environmental parameters, providing complete data for weather stations and indoor monitoring.

Plug & Play Prototyping: Designed for breadboard compatibility. (If purchasing Pre-soldered SKU) Soldered headers allow immediate connection with jumper wires for rapid project integration.

Ultra-Low Power & Wide Voltage: Operates from 2.8V to 5V with very low consumption, can be driven directly by 3.3V MCUs (like ESP32), making it ideal for battery-powered portable devices.

Stable Digital Interface: Uses the standard I2C digital output for strong noise immunity, stable data transmission, and support for multiple devices on the bus with clean wiring.

Miniaturized Integration: Combines two high-performance sensors on a tiny 15mm x 15mm PCB, saving valuable space in your projects.

Product Description
This AHT20+BMP280 3-in-1 environmental sensor module is the for your smart home, weather observation, or any IoT project. It delivers reliable temperature, humidity, and barometric pressure data all on one compact board. Via the simple I2C interface, you can easily read this data into Arduino, ESP8266/32, or Raspberry Pi to build your own intelligent environmental monitoring system.

🚨 Important Notes / How to Use (Proactively Prevent Negative Reviews)

【Critical Difference】Pin Header Status: This product is offered in Unsoldered and Pre-soldered SKUs. Please double-check your selected version before ordering. The Unsoldered version requires you to solder the headers/pins yourself before use.

【I2C Addresses】Two Independent Devices: There are two independent I2C devices on the module. The fixed address for AHT20 is 0x38, and the default address for BMP280 is 0x76 (can be changed to 0x77 via a solder pad). Initialize both addresses correctly in your code.

【Placement】Avoid Heat Sources: The sensors are temperature sensitive. Install the module away from heat sources like the mainboard's CPU or PMIC to ensure accurate temperature readings.

【Pressure Reading】Pressure & Altitude: BMP280 measures absolute atmospheric pressure, which varies with weather and altitude. Calculating altitude requires a known sea-level reference pressure for conversion.

Specifications

Sensor ICs: AHT20 + BMP280

Measured Parameters: Temperature, Humidity, Barometric Pressure

Communication: I2C

Operating Voltage: 2.8V - 5.0V DC

Module Size: 15mm x 15mm

Package Includes

1 × AHT20+BMP280 Sensor Module

1 × Header Strip (Included for Unsoldered SKU to solder yourself)


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