DHT11 Temperature & Humidity Sensor Module

Overview

The DHT11 Temperature & Humidity Sensor Module is a low-cost, reliable solution for environmental sensing. It combines a capacitive humidity sensor and a thermistor to provide digital temperature and humidity readings. The module is pre-calibrated, energy efficient, and simple to interface with popular microcontrollers, making it ideal for DIY projects, home automation, weather stations, and light industrial monitoring.

Key Features

• Dual sensing: Measures both temperature and humidity from a single module.
• Digital output: Single-wire communication simplifies wiring and coding.
• Accurate readings: Temperature accuracy ±2°C; humidity accuracy ±5% RH for dependable monitoring.
• Compact and lightweight: Small footprint fits into tight enclosures and portable devices.
• Low power: Optimized for battery-operated and low-power applications.
• Pre-calibrated: Factory-calibrated for immediate use without extra calibration steps.

Specifications

• Sensor type: Capacitive humidity sensor and thermistor
• Output: Digital signal via a single-wire communication protocol
• Temperature range: 0°C to 50°C
• Temperature accuracy: ±2°C
• Humidity range: 20% to 90% RH
• Humidity accuracy: ±5% RH
• Operating voltage: 3.3V to 5V
• Dimensions: 15.5mm x 12mm x 5.5mm
• Weight: 2 grams
• Pins: VCC, GND, DATA

Applications

The DHT11 module is suitable for a wide range of use cases where compact, low-cost environmental monitoring is required:

• Home automation: Monitor indoor climate for HVAC control, smart thermostats, and greenhouse systems.
• Weather stations: Core component for DIY and educational weather monitoring setups.
• Industrial monitoring: Track conditions in warehouses, storage rooms, and light industrial environments.
• Health and safety: Maintain stable environments in labs, clinics, and medical storage areas.

Benefits

• Reliable monitoring: Stable and repeatable measurements for routine monitoring tasks.
• Easy integration: Single-wire digital protocol works with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers.
• Energy efficient: Low current draw makes it suitable for portable, battery-powered devices.
• Ready out of the box: Pre-calibrated sensor reduces setup time and eliminates the need for additional calibration.

Getting Started and Integration Tips

Follow these steps for quick integration into common development boards:

1. Connect VCC to 3.3V or 5V, GND to ground, and DATA to a digital GPIO pin.
2. Use a 4.7k to 10k pull-up resistor on the DATA line if required by your board or wiring setup.
3. Install a DHT11 library for your platform. Libraries are available for Arduino IDE, Raspberry Pi (Python), and ESP environments.
4. Begin reading values using example sketches or scripts, and account for the sensors sampling limits (typical update rate about 1 Hz).

Compatible Platforms

• Arduino (Uno, Nano, Mega)
• Raspberry Pi (Python libraries available)
• ESP8266 and ESP32
• Other microcontroller platforms supporting single-wire digital input

Why Choose the DHT11 Module

If you need an affordable, compact, and easy-to-use sensor for basic temperature and humidity monitoring, the DHT11 is an excellent choice. It balances cost and performance for hobbyists, educators, and professionals building simple environmental monitoring systems.

Ordering and Notes

• Module ships pre-calibrated and ready to use.
• Not recommended for high-precision laboratory use where better accuracy and a wider measurement range are required.
• Images are for illustration purposes only.

Note

Images are for Illustration Purposes Only.