DHT11 Temperature and Humidity Sensor Module

GST

The DHT11 is a low-cost digital sensor used to measure temperature and relative humidity. It is widely used in beginner electronics projects with boards like Arduino Uno R3, Arduino Nano, and ESP32 Development Board.

The DHT11 Temperature and Humidity Sensor is a compact digital module capable of measuring ambient temperature and relative humidity. It contains a thermistor for temperature sensing and a capacitive humidity sensor, combined with an internal signal processing chip that outputs calibrated digital data.

The sensor communicates with microcontrollers using a single-wire digital interface, making it easy to integrate into embedded systems and IoT projects. Due to its simplicity and affordability, the DHT11 is commonly used in weather monitoring systems, smart home automation, environmental monitoring, and educational electronics projects.

Key Features

Measures temperature and humidity
Digital single-wire communication
Factory calibrated output
Stable and reliable performance
Compact module design
Compatible with Arduino, ESP8266, ESP32, and other microcontrollers

Technical Specifications

Parameter	Value
Operating Voltage	3.3V – 5V
Temperature Range	0°C to 50°C
Humidity Range	20% – 90% RH
Temperature Accuracy	±2°C
Humidity Accuracy	±5% RH
Output Signal	Digital