DHT 11 TEMPERATURE AND HUMIDITY SENSOR

The DHT11 Temperature and Humidity Sensor is a low-cost digital sensor used to measure temperature and relative humidity in the surrounding environment. It combines a humidity sensing element and an NTC temperature sensor with a built-in digital signal processor to provide calibrated digital output. The sensor communicates through a single-wire digital interface, making it easy to connect with microcontrollers such as Arduino, ESP32, STM32, Raspberry Pi, and PIC. It operates over a temperature range of 0°C to 50°C and a humidity range of 20% to 90% RH, making it suitable for indoor environmental monitoring. Due to its simplicity, reliability, and low power consumption, the DHT11 sensor is widely used in weather monitoring systems, smart home automation, IoT projects, greenhouse monitoring, and environmental data logging applications.