1PCS DHT11 DHT-11 Digital Temperature and Humidity Temperature Sensor DIY KIT IC. M.(5*5)

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Temperature and humidity measurements are a nice addition to many hobby projects. But [Rajendra Bhatt] makes the point that many of these sensors have a price tag that is well above what most hobbiests are willing to spend. He decided to take an in-depth look at the DHT11 sensor; which you can get your hands on for under $1.6 if you know where to look.

The four-pin device uses a 1-wire protocol. [Rajendra] discusses the ins and outs of the communicationsdemonstrating the part using a PIC 16F628. It’s a snap to connect to your projectrequiring VCCGNDand a pull-up resistor on the single data line. We’ve already seen it used on at least one projectand hope to see more of this little guy in your own hacks.


  • Dimension 28mm*12mm*10mm
  • Main chip DHT11 huminity sensor
  • Voltage: DC 5V
  • Digital output
  • Humidity Range: 20—90%RH
  • Humidity  accuracy: ±5%RH
  • Temperature range: 0—60?
  • Temperature accuracy: ±2?