DHT11 Digital Temperature And Humidity Sensor

The DHT11 is a basic, ultra-low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analogue input pins are needed). It’s fairly simple to use but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.

DHT11 Specification:

• Operating Voltage: 3-5V
• Humidity: 20%-80%, 5% accuracy
• Temperature: 0° to 50°C, ±2°C accuracy

DHT11 Features:

• Good for 20-80% humidity readings with 5% accuracy
• Good for 0-50°C temperature readings and ±2°C accuracy
• No more than 1 Hz sampling rate (once every second)
• 4 pins with 0.1′ spacing

Package Included:

1 x DHT11 Digital Temperature and Humidity sensor