Description
Product Description
The DHT11 Digital Temperature and Humidity Sensor Module is an affordable sensor module designed to measure ambient temperature and relative humidity. It provides digital readings that can be processed by compatible microcontrollers for environmental monitoring and automation applications.
The DHT11 is commonly used with Arduino, ESP8266, ESP32, and other compatible development boards. It is suitable for weather monitoring, smart home projects, indoor environment monitoring, and educational electronics applications.
The module version typically includes a sensor and interface circuitry to simplify connections and integration into electronic projects.
Key Features
- Measures ambient temperature and relative humidity
- Digital data output
- Simple microcontroller interface
- Compact and lightweight design
- Suitable for Arduino and compatible development boards
- Useful for environmental monitoring
- Ideal for weather station and smart home projects
- Easy integration with supported sensor libraries
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Digital Temperature & Humidity Sensor Module |
| Sensor Model | DHT11 |
| Temperature Measurement Range | 0°C to 50°C |
| Temperature Accuracy | Typically ±2°C |
| Relative Humidity Range | 20% to 90% RH |
| Humidity Accuracy | Typically ±5% RH |
| Output | Digital |
| Communication | Single-wire proprietary digital protocol |
| Supply Voltage | Commonly 3.3V–5V, depending on module version |
| Application | Temperature & Humidity Monitoring |
| Compatible Platforms | Arduino, ESP8266, ESP32 and compatible controllers |
Typical Pin Connections
Common three-pin modules may use the following connections:
- VCC – Power supply
- GND – Ground
- DATA / OUT – Digital data signal
Some DHT11 sensor versions have four pins instead of three. Check the labels on the supplied module before connecting it.
Applications
- Indoor temperature monitoring
- Humidity monitoring
- Weather station projects
- Smart home automation
- Greenhouse monitoring
- Plant environment monitoring
- Educational electronics
- Arduino projects
- ESP8266 and ESP32 IoT projects
- DIY environmental monitoring systems
Important Note
The DHT11 is designed for basic environmental monitoring rather than high-precision measurement. Readings may be affected by sensor placement, airflow, condensation, and environmental conditions. Exact electrical specifications can vary between the bare sensor and breakout-module versions.
DHT11 Digital Temperature & Humidity Sensor is a temperature-humidity compound sensor with calibrated digital signal output. The sensor includes a resistive humidity-sensing component and a NTC temperature-sensing component. Each DHT11 sensor is calibrated in an extremely accurate humidity-calibration chamber. The calibration coefficients are stored in the OTP memory in the form of programs, and these calibration coefficients are called during the internal signal detection process of the sensor, so that there is no need to recalibrate them.
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