DHT11 Digital Temperature and Humidity Sensor

Description

The DHT11 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure surrounding air, outputting a calibrated digital signal. It is incredibly popular for beginner electronics, DIY weather stations, and home automation projects. [1, 2, 3, 4, 5, 6, 7]

Key Specifications

• Temperature Range: \(0^{\circ }C\) to \(50^{\circ }C\) (Accuracy: \(\pm 2^{\circ }C\))
• Humidity Range: \(20\%\) to \(90\%\) RH (Accuracy: \(\pm 5\%\) RH)
• Operating Voltage: \(3.3V\) to \(5V\) DC
• Interface: 1-wire digital signal [1, 2, 3, 4]