Temperature and Humidity Sensor Module DHT11


Temperature and Humidity Sensor Module DHT11

The DHT11 sensor is a very economical, simple temperature and humidity sensor available in the market, It uses a capacitive humidity sensor and a thermistor to detect the values and show them in digital output. Its compact size and sampling rate made this sensor popular among hobbyists. Some of the sensors which can be used as an alternative to DHT11 sensor are DHT22, AM2302, SHT71. The DHT11 also measures relative humidity. The relative humidity is the amount of water vapour in air vs. the saturation point of water vapour in the air. At the saturation point, water vapour starts to condense.



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