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Home / Computer Hardware, Monitors & Peripherals / AHT20+BMP280 Temperature, Humidity, and Barometric Pressure Module - High-Precision Digital Sensor

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Communication Interface I2C
Operating Voltage 3.3V - 5V DC
Temperature Range -40°C to 85°C
Humidity Range 0% to 100% RH
Pressure Range 300 to 1100 hPa
Temperature Accuracy ±0.3°C
Humidity Accuracy ±2% RH
Module Dimensions 20mm x 15mm x 3mm
Compatibility Arduino, ESP32, ESP8266, Raspberry Pi
Package Weight 5g

5 reviews

A

Anonymous

Apr 12, 2026

Rating: 4/5

Good module, pins need header

Great sensor but comes without headers. You need to solder them yourself which is fine for me.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Great value for money

Bought five for a class project. All of them worked out of the box without issues.

A

Anonymous

Feb 27, 2026

Rating: 5/5

Easy library support

Found libraries easily for Arduino IDE. Setup took less than 10 minutes from unboxing to data.

A

Anonymous

Feb 27, 2026

Rating: 5/5

High precision as advertised

Compared it against a calibrated unit in the lab. The variance is minimal and well within specs.

A

Anonymous

Jan 19, 2026

Rating: 5/5

Perfect for my weather station

Works flawlessly with my ESP32 project. Readings are consistent and the I2C connection is stable.

5 FAQ

Q: Is calibration needed?

A: Sensors are factory calibrated. However, software offset can be applied if needed for specific environments.

Q: Is this 5V tolerant?

A: Yes, the module includes a voltage regulator allowing safe operation between 3.3V and 5V.

Q: Can I use this outdoors?

A: The module itself is not waterproof. Please house it in a weatherproof enclosure with ventilation.

Q: Does it come with headers?

A: No, soldering is required. This allows flexibility for direct wiring or header usage.

Q: What are the I2C addresses?

A: The AHT20 default address is 0x38 and the BMP280 default address is 0x76.

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