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 Pin Configuration Pin Description VCC Power Supply (3.3V–5V) DATA Digital Data Output GND Ground What’s in the Box 1 × DHT11 Temperature and Humidity Sensor Module
