The DHT11 module is a digital temperature and humidity sensor commonly used in electronic projects for monitoring environmental conditions. It’s widely employed in applications like weather stations, climate control systems, and various projects that require accurate temperature and humidity measurements.
The DHT11 module is a Humidity and Temperature Sensor, which generates calibrated digital output. This module can be interfaced with any microcontroller like Arduino, Raspberry Pi, etc. and get instantaneous results. This is a low-cost humidity and temperature sensor which provides high reliability and long-term stability.
It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and outputs a digital signal on the data pin (no analogue input pins needed). It’s very simple to use, and libraries and sample codes are available for Arduino and Raspberry Pi. This module makes it easy to connect the sensor to an Arduino or microcontroller as includes the pull-up resistor required to use the sensor.
Only three connections are required to be made to use the sensor – Vcc, Gnd and Output. It has high reliability and excellent long-term stability, thanks to the exclusive digital signal acquisition technique and temperature & humidity sensing technology. This module is capable of measuring both temperature and relative humidity in the surrounding environment.
It provides a digital signal that can be read by a microcontroller or digital system. The sensor uses a one-wire communication protocol to transmit data. It provides a specific level of precision in temperature and humidity readings. The sensor typically has a response time, indicating how quickly it can provide stable and accurate temperature and humidity readings after being powered on or after a measurement request.
The DHT11 module usually operates on a low voltage supply, typically around 3.3V to 5.5V DC, making it compatible with a wide range of microcontrollers and digital systems. These modules are widely used in projects that require monitoring of temperature and humidity, such as weather stations, indoor climate control, and environmental monitoring systems.
The sensor is interfaced with microcontrollers or other digital devices for data processing and display. It communicates using a specific protocol (often a one-wire protocol). This DHT11 module is typically designed in a compact form factor, allowing for easy integration into various electronic projects. It often includes mounting holes for easy installation.
Specifications
Power Supply: 3.3~5.5V DC
Output: 4 pin single row
Measurement Range: Humidity 20-90%RH, Temperature 0~50℃
Accuracy: Humidity +-5%RH, Temperature +-2℃
Resolution: Humidity 1%RH, Temperature 1℃
Interchangeability: Fully Interchangeable
Long-Term Stability: <±1%RH/year
Features
Precise Temperature and Humidity Measurement-
The DHT11 Module is designed to provide accurate temperature and humidity readings for your projects. Whether you’re monitoring room conditions, optimizing plant growth, or implementing climate control, this module ensures reliable data for informed decision-making.
High Sensitivity, Low Power Consumption-
With its high sensitivity and low power consumption, the DHT11 module offers an optimal balance between performance and efficiency. It excels in applications where battery life and accuracy are crucial factors.
User-Friendly Integration-
Featuring clearly labelled pins and comprehensive documentation, the DHT11 Module is designed for easy integration into your projects. Whether you’re an experienced developer or just starting out, you’ll appreciate the simplicity and efficiency it brings to your environmental sensing applications.
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