DHT11 basic temperature-humidity sensor + extras

PRODUCT ID: 386
$5.00
QTY DISCOUNT
1-9 $5.00
10-99 $4.50
100+ $4.00

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 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/humidity, but its smaller and less expensive

We have a Adafruit Learning System guide with schematics, Arduino & CircuitPython code, datasheets and more!

Comes with a 4.7K or 10K resistor, which you will want to use as a pullup from the data pin to VCC.

Technical Details

  • Low cost
  • 3 to 5V power and I/O
  • 2.5mA max current use during conversion (while requesting data)
  • Good for 20-80% humidity readings with 5% accuracy
  • Good for 0-50°C temperature readings ±2°C accuracy
  • No more than 1 Hz sampling rate (once every second)
  • Body size 15.5mm x 12mm x 5.5mm
  • 4 pins with 0.1" spacing

We have a Adafruit Learning System guide with schematics, Arduino & CircuitPython code, datasheets and more!

RoHS 2 2011 65 EU Compliant
RoHS 2 2015 863 EU Compliant

Learn

Build a simple home automation system & control it from anywhere!
Avoid headaches trying to get those old quirky sensors to work.
Basic temperature & humidity sensors
Humidity and Temperature Logging From Your Pi or Beaglebone Black to the Cloud!
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