The AM2301 AHT20 is a new generation of temperature and humidity sensor designed to be highly reliable, accurate, and energy-efficient. It features a dedicated I2C digital output interface, making it easy to integrate with microcontrollers like Arduino, ESP32, and STM32. Encased in a durable plastic shell, the module provides a stable and fast response across a wide range of operating conditions, making it an excellent upgrade for traditional DHT-style sensors in applications requiring high precision.

Specifications

• Model/Chip: AHT20 in an AM2301 shell
• Operating Voltage: DC 3.3V to 5.0V
• Interface: I2C Digital Interface
• Humidity Measurement Range: 0% to 100% RH
  • Humidity Accuracy: +/- 2% RH (Typical)
  • Humidity Resolution: 0.024% RH
• Temperature Measurement Range: -40°C to +85°C⁴
  • Temperature Accuracy: +/- 0.3C (Typical)
  • Temperature Resolution: 0.01°C
• Power Consumption: Low power consumption, suitable for battery-operated devices
• Response Time: Fast response
• Wiring Colour Code:
  • VCC: Red
  • GND: Black
  • SDA: Green
  • SCL: Blue

Features

• High Precision Output: Delivers calibrated digital temperature and humidity data with superior accuracy compared to resistive sensors.
• I2C Communication: Simple two-wire bus system allows easy integration and the ability to connect multiple I2C devices.⁵
• Factory Calibration: Fully calibrated for accurate, linear output, ensuring long-term reliability.⁶
• Durable Design: Comes in a standard plastic package, protecting the sensor elements from environmental factors.
• Application Ready: Ideal for use in:
  • HVAC systems and environmental monitoring
  • Weather stations and smart agriculture
  • Home automation and appliance control
  • Data loggers and remote sensing

Tutorial (Reference only): ControllersTech