DHT11 humidity and temperature sensor module

The DHT11 sensor is a popular sensor that is used to measure the temperature and relative humidity of the environment. This module can be used in the "smart home" system, in creating projects related to weather parameters, or in household projects. The sensor is not fast and accurate, but the sensor is often used in their first projects in the Arduino environment, because of its ease of use.

The basis for the sensor are: thermistor and hygrometer. In addition to two sensors, the module has an integrated ADC in the form of a microcontroller (8-bit), which is necessary for converting analog humidity and temperature values into digital signals. The advantage of the sensor in comparison with its counterpart (DHT22) is its low cost.

The sensor is connected to the Arduino board or other microcontroller devices using 3 pins (VCC, GND, S). The DHT11 sensor module board already has built-in components that make it easy to connect to the Arduino. To connect, you need to apply voltage to the VCC output from an external power source or microcontroller device and connect the common output of the GND module, and to transmit a digital signal, connect the S pin to the Arduino digital port.

If you have an uninstalled DHT library in the Arduino IDE, then you can download and install it yourself.

The kit consists of a DHT11 humidity and temperature sensor module board and 3 pieces of wires (female-female).

Sensor Specifications:

Supply voltage, V 3 ... 5.5
Humidity determination accuracy, % 20 ... 90
Temperature determination accuracy, °C 0 ... 50
Maximum polling frequency, Hz 1
Current consumption, mA 0.5 ... 2.5
Module dimensions, mm 15.5 x 12 x 5.5.