|Humidity||20%-80%, 5% accuracy;|
|Temperature||0deg to 50 deg C, +/- 2 deg C accuracy|
|Power supply||DC 3.5-5.5V|
|Sampling period||more than 2 seconds|
|Accuracy||At 25 deg C +/- 5% RH|
|Temperature Range (Degree Celsius)||At 25 deg C +/- 2 deg C|
|Application||HVAC, dehumidifier, testing and inspection equipment, consumer goods, automotive, automatic control,|
DHT11 is an inexpensive sensor that provides calibrated digital outputs for ambient temperature and relative humidity. It comes in a single row 4-pin package and operates from 3 to 5.5V power supply. It can measure temperature from 0-50 °C with an accuracy of ±2°C and relative humidity ranging from 20-95% with an accuracy of ±5%. It has got its own proprietary 1-wire protocol, and therefore, the communication between the sensor and a microcontroller is not possible through a direct interface with any of its peripherals. The protocol must be implemented in the firmware of the MCU through bit-banging of an I/O pin.
Low-cost temperature and humidity sensor. Requires a single digital I/O pin to read both temperature and humidity values. Details:
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