DHT11 Sensor Features
The DHT11 is a digital temperature and humidity sensor. This sensor is able to measure the humidity in the range of 20% to 80% with an accuracy of 5%. It can also measure the temperature in the range of 0 to 50 degrees Celsius with an accuracy of 2 degrees.
Note
The sampling frequency of this sensor is 1Hz. As a result, there must be at least one second between every readings of the sensor, otherwise the reading values will be incorrect.
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DHT11 Sensor Features
The DHT11 is a digital temperature and humidity sensor. This sensor is able to measure the humidity in the range of 20% to 80% with an accuracy of 5%. It can also measure the temperature in the range of 0 to 50 degrees Celsius with an accuracy of 2 degrees.
Note
The sampling frequency of this sensor is 1Hz. As a result, there must be at least one second between every readings of the sensor, otherwise the reading values will be incorrect.
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HTU21D Sensor Features
The HTU21D is a digital humidity and temperature sensor. It uses I2C communication and there are 2 SCL and SDA pins that are needed to be hooked up in order to communicate to this sensor. This sensor is ideal for temperature and humidity sensing.
Humidity measuring range: 0-100% RH°/ Accuracy ±2%
Temperature measurement range: -40 ° +125 °/ Accuracy ±0.3C
You can download the datasheet of this module here.
[wpdm_package id='17292']
HTU21D Sensor Pinout
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