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DHT11 Digital Temperature and Humidity Sensor

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DHT11 Low Cost Humidity and Temperature Sensor

DHT11 digital temperature and humidity sensor is a composite sensor measuring temperature and relative humidity in a single four pin package. The sensor includes a resistive humidity sensor and an NTC thermistor. A high-performance 8-bit microcontroller converts raw measurements of the sensors to a calibrated digital output every two seconds.

DHT11 measures relative humidity in the range 20% to 95% with +-5% accuracy.

DHT11 measures temperature in the range 0 to 50 degrees Clesius with an accuracy of +-2 degrees.

Supply voltage range is 3.3 V-5 V but works best at 5V.


One bi-directional digital output for temperature and humidity measurements.


One line of code reads humidity with the EzSBC1.

Humidity=DHTHUM( PinNo, 11)


One line of code reads temperature with the EzSBC1

Temperature=DHTTEMP( PinNo, 11)


See the DOWNLOADS tab for the datasheet.

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