DHT11Temperature and Humidity Sensor

DHT11Temperature and Humidity Sensor

Pin Identification and Configuration :


No:
Pin Name
Description

For Sensor

1
Vcc
Power supply 3.5V to 5.5V

2
Data
Outputs both Temperature and Humidity through serial Data

3
NC
No Connection and hence not used

4
Ground

Connected to the ground of the circuit

For module

1
Vcc

Power supply 3.5V to 5.5V

2
Data

Outputs both Temperature and Humidity through serial Data

3
Ground

Connected to the ground of the circuit

DHT11 Specifications:

• Operating Voltage: 3.5V to 5.5V
• Operating current: 0.3mA (measuring) 60uA (standby)
• Output: Serial data
• Temperature Range: 0°C to 50°C
• Humidity Range: 20% to 90%
• Resolution: Temperature and Humidity both are 16-bit
• Accuracy: ±1°C and ±1%
• Note: The DHT11 datasheet can be found at the bottom of the page

 Use DHT11:

The DHT11 is a commonly used Temperature and humidity sensor. The sensor comes with a dedicated NTC to measure temperature and an 8-bit microcontroller to output the values of temperature and humidity as serial data. The sensor is also factory calibrated and hence easy to interface with other microcontrollers.
The sensor can measure temperature from 0°C to 50°C and humidity from 20% to 90% with an accuracy of ±1°C and ±1%. So if you are looking to measure in this range then this sensor might be the right choice for you.

Applications:

• Measure temperature and humidity
• Local Weather station
• Automatic climate control
• Environment monitoring