Temperature Humidity Sensor Module(DHT11)

Overview

The DHT11 Temperature & Humidity Sensor Module is a compact, reliable digital sensor that provides accurate temperature and humidity readings. This module comes with a built-in pull-up resistor and filtering capacitor, making it ready to connect directly to your microcontroller without extra components. Whether you're building a weather station, a smart home system, or an environmental monitoring project, the DHT11 offers a simple and cost-effective solution.

Key Features

• Digital Output: Single-wire digital interface simplifies wiring and reduces pin usage.
• Integrated Pull-Up Resistor: No need for external resistors, plug-and-play with most microcontrollers.
• High Reliability & Long-Term Stability: Consistent performance over time for continuous monitoring.
• Low Power Consumption: Ideal for battery-powered and IoT applications.
• Compact 3-Pin Module: Easy to mount on breadboards or PCBs.

Technical Specifications

• Model: DHT11
• Supply Voltage: 3.3V – 5V DC
• Temperature Range: 0°C to 50°C (±2°C accuracy)
• Humidity Range: 20% to 90% RH (±5% RH accuracy)
• Resolution: Temperature: 1°C, Humidity: 1% RH
• Sampling Period: 1 second (max)
• Interface: Single-wire digital signal
• Dimensions: Approximately 28mm x 12mm x 10mm

Applications & Use Cases

• Weather Stations: Monitor local temperature and humidity for personal or educational projects.
• Smart Home Automation: Trigger air conditioning, humidifiers, or dehumidifiers based on readings.
• Greenhouse & Agriculture: Maintain optimal growing conditions for plants.
• Data Logging: Record environmental data for analysis in research or hobbyist projects.
• IoT Projects: Send real-time sensor data to cloud platforms like ThingSpeak or Blynk.
• Arduino Learning: Perfect for beginners to understand sensor interfacing and data processing.

What's Included

• 1x DHT11 Temperature & Humidity Sensor Module

Compatibility

• Arduino: Works with all Arduino boards (Uno, Nano, Mega, etc.) using the DHT library.
• Raspberry Pi: Can be used with GPIO pins (requires pull-up resistor, though module already has one).
• ESP8266/ESP32: Ideal for IoT applications with Wi-Fi connectivity.
• Other Microcontrollers: STM32, PIC, and any MCU capable of reading digital signals.

MOKWN Recommendation

For most hobbyist and educational projects, the DHT11 is an excellent starting point due to its simplicity and low cost. If you require higher accuracy and faster sampling, consider upgrading to the DHT22 or AM2302. However, for basic environmental monitoring, the DHT11 delivers reliable performance and is a staple in the maker community. Pair it with an Arduino starter kit from MOKWN for a complete learning experience.