DHT11 Temperature and Humidity Sensor

The DHT11 is an inexpensive sensor for humidity and temperature with a digital single-wire interface. It is factory calibrated but does not have a high resolution. The required resistors are already mounted on the board, so it can be connected directly to the microcontroller.

Recommended alternative with higher resolution and accuracy: DHT22 Temperature and Humidity Sensor

Recommended Accessories:

• Dupont Cable M-F 20cm 20 Pieces

Features:

• Needs only one digital pin
• Its own single-wire protocol, not compatible with Dallas 1-Wire
• Read at most once per second
• Power LED on the board
• Arduino library «DHT sensor library» in the Library Manager

Application Examples:

• Display of indoor climate
• Simple weather stations
• Getting started with sensors
• Integration into Home Assistant with ESPHome

Documentation:

• ESPHome documentation: DHT Temperature+Humidity Sensor
• DHT11 and DHT22 with Arduino tutorial (Last Minute Engineers)
• DHT sensors, comparison and wiring (Adafruit)
• DHT sensor library (GitHub)

Technical Data:

• Model: DHT11
• Operating voltage: 3.3 to 5.5 V
• Humidity measuring range: 20 to 80 % (±5 % accuracy)
• Temperature measuring range: 0 °C to 50 °C (±2 °C accuracy)
• Resolution: 1 % rH / 1 °C
• Response time: < 5 s
• Pins: GND, DATA, VCC
• Dimensions: 32 × 15 × 8 mm
• Weight: 5 g

Scope of Delivery:

• 1× DHT11 breakout board