What is the difference between a DHT11 Sensor and a DHT Sensor Module

 The DHT11 is a widely used temperature and humidity sensor with a dedicated NTC for temperature measurement and an 8-bit microcontroller for serial output of temperature and humidity values. 

Pinout Configuration

For DHT11 Sensor

•       Vcc - Power supply 3.5V to 5.5V
•        Data - Outputs both Temperature and Humidity through serial Data
•         NC - No Connection and hence not used
•        Ground - Connected to the ground of the circuit 

For the DHT11 Sensor module

•      Vcc - Power supply 3.5V to 5.5V
•      Data - Outputs both Temperature and Humidity through serial Data
•      Ground - Connected to the ground of the circuit

Difference between DHT11 Sensor and Module

The DHT11 sensor is available as a sensor or a module. The sensor's performance is the same in either case. The sensor will be a 4-pin package with only three pins used, whereas the DHT11 Sensor module will have three pins.

The sensor and the module differ only in that the module includes a filtering capacitor and a pull-up resistor, whereas the sensor requires you to use them externally if necessary.

Where to use DHT11 Sensors

The DHT11 is a temperature and humidity sensor that is widely used to detect temperature and humidity. The sensor includes a temperature NTC and an 8-bit microcontroller that outputs temperature and humidity values as serial data. The sensor is also factory calibrated, making it simple to connect to other microcontrollers.

The sensor has an accuracy of ±1°C and ±1% and can measure temperature from 0°C to 50°C and humidity from 20% to 90%. So, if you need to measure in this range, this sensor could be a good option for you. 

Applications

·       Measure temperature and humidity

·       Local Weather station

·       Automatic climate control

·       Environment monitoring