DHT11 Temperature Humidity Sensor

DHT11 Temperature and Humidity Sensor Module (Breakout Board)

Description: The DHT11 is a reliable, ultra-low-cost digital sensor designed to measure ambient temperature and relative humidity. This convenient breakout board version simplifies wiring by integrating the necessary pull-up resistor and decoupling capacitor directly onto the PCB, making it a true plug-and-play component. Operating on a single-wire digital interface, it sends data directly to your microcontroller without the need for complex analog-to-digital conversions. Whether you are building your first weather station or automating a smart home environment, the DHT11 provides a perfect balance of affordability and ease of use.

Key Specifications:

1. Operating Voltage: 3.3V to 5V DC
2. Temperature Measurement Range: 0°C to 50°C
3. Temperature Accuracy: ±2°C
4. Humidity Measurement Range: 20% to 90% RH
5. Humidity Accuracy: ±5% RH
6. Output Signal: Digital (Single-bus)
7. Pin Count: 3 Pins (VCC, Data, GND)

Features:

1. Board-Mounted Convenience: The integrated PCB eliminates the need for external breadboard resistors, allowing direct connection via standard jumper wires.
2. Low Power Consumption: Highly energy-efficient, making it perfectly suited for battery-powered IoT devices and remote sensors.
3. Extensive Library Support: Exceptionally easy to program with widely available open-source libraries for almost every modern microcontroller platform.
4. Digital Accuracy: Utilizes a capacitive humidity sensor and a thermistor to ensure stable, digital data transmission free from analog noise interference.

Common Applications:

1. DIY weather stations and indoor climate monitors using microcontrollers (Arduino, ESP32, ESP8266 NodeMCU).
2. Automated environmental control for greenhouses, terrariums, and incubators.
3. Smart home HVAC prototyping and room temperature logging.
4. Educational STEM kits and introductory electronics projects.