Description

DHT22 Temperature and Humidity Sensor

What is DHT?

DHT-22 DHT 22 DHT22 Temperature and Humidity Sensor Module are a primary, low-cost digital temperature, and humidity sensor. The use of a humidity sensor and a thermistor to measure the nearby air. It spits out a digital signal on the data pin. This is very simple to use. The sensor requires careful timing to grab data. The drawback of this sensor. Every 2 seconds, you can new data. Sensor readings can be up to 2 seconds old.

How does it work?

The sensor  Connects the first pin on the left to 3-5V power, the second pin to your data input pin, and the right side pin to the ground. it uses a single wire to send data, it is not Dallas One Wire.  If you want multiple sensors, each one must have its own data pin.

Specifications:

  1. High accuracy
  2. Capacitive type
  3. Full range temperature compensated
  4. Relative humidity and temperature measurement
  5. Measure digital signal
  6. Outstanding long-term stability
  7. Extra apparatus not needed
  8. Long transmission distance
  9. Low power use
  10. Four pins packaged

dht22 pinout

Features:

Measuring series temperature -40-80 ℃; humidity 0; 99.9%RH
Measurement accuracy (25℃) temperature: + 0.5; humidity: + 2%RH (10; 90%RH)
Resolution: temperature 0.1 ℃, humidity: 0.1%RH
reduction value: temperature <1℃ / year; humidity: < 1%RH/ years
Sensor type: temperature resistance type sensor
Response time: temperature 5S; humidity: 5S 1/e (63%)
Work within the scope -40-80℃
Power source DC3.3-5.5V
Shell material PC plastic
Weight 1 gram
Color White

Package Includes:

1 x DHT22 Digital Temperature and Humidity Sensor Module

 

DHT-22 DHT 22 DHT22 Digital Temperature and Humidity Sensor Module are a primary, low-cost digital temperature, and humidity sensor. The use of a humidity sensor and a thermistor to measure the nearby air. It spits out a digital signal on the data pin. This is very simple to use. The sensor requires careful timing to grab data. The drawback of this sensor. Every 2 seconds, you can new data. Sensor readings can be up to 2 seconds old.

 

 

 

Additional information

Weight 0.1 kg

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