temperature and humidity module

A temperature and humidity sensor module is a compact device that measures both ambient temperature and relative humidity. Popular models like DHT11 and DHT22 are widely used in DIY electronics, IoT, and automation projects. They provide digital output, making them easy to interface with microcontrollers such as Arduino, ESP8266, ESP32, and Raspberry Pi.

🔹 Key Specifications

• Parameters Measured: Temperature (°C) and Relative Humidity (%)
• Output Type: Digital signal (single-wire protocol)
• Operating Voltage: 3.3V – 5V DC
• Temperature Range:
  • DHT11: 0°C to 50°C (±2°C accuracy)
  • DHT22: −40°C to +80°C (±0.5°C accuracy)
• Humidity Range:
  • DHT11: 20% – 90% RH (±5% accuracy)
  • DHT22: 0% – 100% RH (±2–3% accuracy)
• Interface Pins:
  • VCC (Power)
  • GND (Ground)
  • DATA (Digital output)
  • Sometimes NC (Not Connected)

🔹 Features

• Dual Measurement: Provides both temperature and humidity in one module.
• Digital Output: No need for analog-to-digital conversion.
• Low Power Consumption: Suitable for battery-powered systems.
• Compact & Affordable: Easy to integrate into small projects.
• Library Support: Arduino and Raspberry Pi libraries available for quick setup.

🔹 Applications

• Weather monitoring stations
• Smart home automation (HVAC control, humidifiers)
• Greenhouse and agricultural monitoring
• IoT devices and robotics
• Educational electronics projects

✅ In summary: A temperature and humidity module like the DHT11/DHT22 is a reliable, low-cost sensor that outputs digital data for easy integration, making it ideal for environmental monitoring and IoT projects.