• DHT11 Temperature-humidity Sensor
  • DHT11 Temperature-humidity Sensor

DHT11 Temperature-humidity Sensor


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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 analog input pins needed). Its 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.


Items Conditions Min Norm Max Unit
VCC DC 3.3 5.0 5.5 Volts
Measuring Range Humidity 20% 90% RH
Temperature 0; 50 °C
Sensitivity Humidity ±1% RH
Temperature ±1 °C
Signal Collecting Period 2 S


More detailed information see :