DHT22 Temperature and Humidity Sensor Module

The DHT22 Temperature and Humidity Sensor Module measures both temperature and humidity using a single digital output pin. As a temperature and humidity sensor, it covers a wide range from -40°C to 80°C and reads humidity between 0 and 100% RH. The module connects directly to a breadboard and needs no external ADC (analog-to-digital converter).

The dht22 sensor sends data in a 40-bit serial packet, so the timing between your microcontroller and sensor must be exact or readings fail silently. A common limitation is its 2-second minimum gap between readings — read faster and you get stale data.

The temperature humidity sensor works with Arduino using simple one-wire libraries. Students and learners use it for weather stations, HVAC monitors, and IoT projects, wire it to GPIO pin 2, load the DHT library, and your first reading appears in under a minute. StemVolt provides this sensor with trusted quality, ensuring reliable performance and easy usability.

Related Products:

• Checkout DHT11 Humidity And Temperature Sensor Module

Features:

• Temperature range of -40°C to 80°C covers both cold storage and outdoor monitoring use cases
• Humidity measurement from 0 to 100% RH handles dry desert and high-moisture greenhouse conditions
• Digital output eliminates the need for an ADC chip allowing direct microcontroller pin connection
• Operating voltage of 3.3V to 5V makes the dht22 sensor module compatible with nearly every board

Technical specifications:

Applications:

• A plant watering system reads humidity levels and triggers a pump when the air gets too dry
• The DHT22 Temperature and Humidity Sensor Module monitors cold room conditions and sends SMS alerts on breach
• A greenhouse controller reads temperature and humidity data and adjusts fan speed through a relay

Package includes:

• 1 x DHT22 Temperature and Humidity Sensor Module