AHT20 Digital Temperature and Humidity Sensor Measurement Module

AHT20 is a highly accurate and reliable digital sensor for measuring both temperature and humidity. It is designed for use in various applications such as weather stations, home automation systems, industrial applications, and more. The sensor is equipped with a high-performance capacitive humidity sensor and a thermistor for temperature sensing, all in a compact and easy-to-integrate module.

Specifications:

• Sensor Type: Digital Temperature and Humidity Sensor (Thermistor + Capacitive Humidity Sensor)
• Operating Voltage: 2.3V to 5.5V (DC)
• Communication Interface: I2C (Inter-Integrated Circuit) protocol
• Temperature Measurement Range:
  • -40°C to +85°C
• Temperature Accuracy:
  • ±0.3°C (at 25°C)
• Humidity Measurement Range:
  • 0% RH to 100% RH
• Humidity Accuracy:
  • ±3% RH (at 25°C, 0% to 80% RH)
  • ±4% RH (at 80% to 100% RH)
• Response Time:
  • < 1s for both temperature and humidity
• Resolution:
  • Temperature: 0.01°C
  • Humidity: 0.1% RH
• Sampling Rate:
  • 1Hz (1 sample per second)
• Power Consumption:
  • Operating: ~ 0.3 mA (typical)
  • Sleep Mode: < 10 µA
• Temperature Coefficient:
  • ±0.01% RH/°C
• Operating Humidity Range:
  • 0% RH to 100% RH (non-condensing)
• Storage Temperature:
  • -40°C to +85°C
• Package:
  • SMD (Surface-Mount Device) or module version
• Size (Module):
  • Approx. 2.3 x 2.0 x 0.8 cm

Features:

1. High Accuracy:

   • Provides precise temperature and humidity readings, making it suitable for both home and industrial applications.

2. Low Power Consumption:

   • Ultra-low current consumption, ideal for battery-operated or portable devices.

3. Easy Integration:

   • Supports I2C communication, allowing for straightforward interfacing with microcontrollers like Arduino, ESP32, Raspberry Pi, etc.

4. Fast Response Time:

   • Both temperature and humidity data can be acquired quickly (under 1 second), ensuring real-time monitoring and control.

5. Wide Operating Range:

   • The sensor works in a broad temperature range (-40°C to +85°C) and can measure relative humidity from 0% RH to 100%.

6. Compact Size:

   • The module is small and lightweight, making it perfect for space-constrained applications and portable devices.

7. Calibration:

   • The AHT20 comes factory-calibrated, eliminating the need for manual calibration and ensuring long-term stability and accuracy.

8. Built-in Temperature and Humidity Sensor:

   • No need for separate temperature and humidity sensors—both are integrated into one compact module.

9. Noise Immunity:

   • High-quality signal processing ensures accurate measurements even in noisy environments.

10. Temperature Compensation:

• The sensor has built-in temperature compensation, ensuring consistent humidity measurements across a wide range of temperatures.

1. Support for Multiple Platforms:

• Libraries and code examples are available for popular platforms like Arduino, ESP32, Raspberry Pi, etc.

1. Wide Application Range:

• Ideal for use in weather stations, HVAC systems, air purifiers, smart home devices, environmental monitoring systems, and more.

1. Digital Output:

• No need for analog-to-digital conversion (ADC) since it provides digital output via I2C communication.

Applications:

• Environmental Monitoring: For applications like weather stations, smart agriculture, and greenhouse management.
• Home Automation: Can be used in smart home systems to monitor temperature and humidity for climate control.
• Industrial Applications: Temperature and humidity monitoring in warehouses, cleanrooms, and factories.
• HVAC Systems: Integration into heating, ventilation, and air conditioning systems for maintaining optimal environmental conditions.
• Health and Wellness: In air quality monitors, medical devices, and other health-related applications where environmental conditions are important.