DHT11 Humidity and Temperature Sensor

SENSING PRINCIPLE: Uses a capacitive humidity sensing element and an NTC thermistor to measure relative humidity and temperature. The internal circuitry processes the sensor data and converts it into a calibrated digital signal.
PIN CONFIGURATION: VCC (3.3V–5.5V power supply), DATA (Digital data output for temperature and humidity), GND (Ground connection).
OUTPUT SIGNAL: Provides a single-wire digital output signal containing both temperature and humidity data.
OPERATING VOLTAGE: Works with a supply voltage ranging from 3.3V to 5.5V DC.
MEASUREMENT RANGE: Temperature range from 0°C to 50°C and humidity range from 20% to 90% RH.
MEASUREMENT ACCURACY: Temperature accuracy of approximately ±2°C and humidity accuracy of about ±5% RH.
SAMPLING RATE: Updates measurement data approximately once every 2 seconds.
PHYSICAL CHARACTERISTICS: Compact sensor module with approximate dimensions of 3 cm × 3 cm × 1 cm and lightweight construction.
APPLICATION SCOPE: Commonly used in weather monitoring systems, smart home automation, environmental monitoring, HVAC control systems, and temperature–humidity measurement projects.