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Temperature & Humidity Sensor

 79.00

  • USD: $ 1.10

The DHT11 is a basic, ultra low-cost temperature and humidity sensor. It uses capacitive humidity sensor and a thermistor to measure the temperature.

  • Arduino Compatible
  • 3 to 5V power and I/O
  • Body size 15.5mm x 12mm x 5.5mm
  • 2.5 mA max current use during conversion (while requesting data)
  • Good for 20-80 percent humidity readings with 5 percent accuracy
  • Good for 0-50 degree celsius temperature readings ±2 degree celsius accuracy
  • Sampling rate: 1Hz
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Description

The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the temperature of the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its 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. Compared to the DHT22, this sensor is less precise, less accurate and works in a smaller range of temperature or humidity, but its smaller and less expensive. Comes with a 4.7K or 10K resistor, which you will want to use as a pull-up from the data pin to VCC.

Features:

  • Arduino Compatible
  • 3 to 5V power and I/O
  • Body size 15.5mm x 12mm x 5.5mm
  • 2.5 mA max current use during conversion (while requesting data)
  • Good for 20-80 percent humidity readings with 5 percent accuracy
  • Good for 0-50 degree celsius temperature readings ±2 degree celsius accuracy
  • Sampling rate: 1Hz

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