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DHT22 Temperature and Humidity Sensor

1 Review
in stock

QUICK OVERVIEW

DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). It’s fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.

Price: $14.04 (GST inclusive)

12 in stock (can be backordered)

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SKU: TR467 Categories: Humidity Sensors, Sensors, Temperature Sensors Tag: Sensors
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  • Description
  • Reviews (1)

Description

DHT22 output calibrated digital signal. Small size & low consumption & long transmission distance(20m) enable DHT22 to be suited in all kinds of harsh application occasions. Single-row packaged with four pins, making the connection very convenient.
As you can see, the sensor size is so small when we compared with Malaysia 20 cent. Alternatively the size should be around our index finger size.

Features

  • Low cost
  • 3 to 5V power and I/O
  • 2.5mA max current use during conversion (while requesting data)
  • Good for 0-100% humidity readings with 2-5% accuracy
  • Good for -40 to 80°C temperature readings ±0.5°C accuracy
  • No more than 0.5 Hz sampling rate (once every 2 seconds)
  • Body size 27mm x 59mm x 13.5mm (1.05″ x 2.32″ x 0.53″)
  • 4 pins, 0.1″ spacing
  • Weight (just the DHT22): 2.4g

Tutorials

Resources

  • Datasheet (DHT22)

Recommended Courses

  • WSQ – Internet of Things (IoT) Implementation with Microcontroller
  • WSQ – Internet of Things (IoT) Management with Raspberry Pi
  • WSQ – Internet of Things (IoT) Fundamental for Beginners

1 review for DHT22 Temperature and Humidity Sensor

  1. Rated 5 out of 5

    Robo Admin T – January 24, 2023

    Cheap and Good Product!

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