DHT11 Temperature And Humidity Sensor

The DHT11 Temperature And Humidity Sensor measures both air temperature and relative humidity (RH — the amount of moisture in the air as a percentage) using a single digital signal pin. The dht11 sensor covers a temperature range of 0 to 50 degrees Celsius with ±2.0 degree accuracy, and a humidity range of 20% to 90% RH with ±5.0% accuracy. It runs on 3.3V to 5V supply.

A non-obvious fact is that the DHT11 sends temperature and humidity data as a serial digital signal, not an analog voltage — so one GPIO pin handles both readings with the right library. One honest limitation is that the dht11 humidity sensor cannot read below 20% RH, which makes it unsuitable for very dry environments or industrial drying applications.

hobbyists, and makers use this with Arduino. Connect VCC, GND, and the data pin, then load a DHT library example to start reading. StemVolt provides this sensor with trusted quality, ensuring reliable performance and easy usability.

Related Products:

• Checkout The DHT22 Temperature and Humidity Sensor Module

Features:

• Humidity range of 20% to 90% RH covers all standard indoor environment monitoring needs comfortably
• Temperature measuring range of 0 to 50 degrees suits room climate, greenhouse, and school lab projects
• Measurement accuracy of ±5.0% RH for humidity and ±2.0 degree for temperature gives reliable real-world readings
• dht11 sensor 4 pins layout includes VCC GND data and an unused pin for simple wiring on breadboard

Technical Specifications:

Applications:

• A classroom weather station uses this sensor to display room temperature and humidity on an LCD
• A plant care monitor reads humidity levels and triggers a water pump when air becomes too dry
• A DHT11 Temperature And Humidity Sensor logs temperature data to a serial monitor for school science projects

Package Includes:

• 1 x DHT11 Temperature And Humidity Sensor