Description

The DHT11 is a basic digital temperature and humidity sensor with a modest price tag. It measures the ambient air with a capacitive humidity sensor and a thermistor and outputs a digital signal on the data pin (no analog input pins needed).

Features

• 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
  Body size 15.5mm x 12mm x 5.5mm
  4 pins with 0.1" spacing
  No more than 1 Hz sampling rate (once every second)

Applications

• DHT11 Relative Humidity and Temperature Sensor can be used in many applications like:
  HVAC (Heating, Ventilation and Air Conditioning) Systems.
  Weather Stations.
  Medical Equipment for measuring humidity.
  Home Automation Systems.
  Automotive and other weather control applications.