Description
The Temperature and Humidity Module is a reliable digital sensor designed to measure ambient temperature and relative humidity with accuracy and stability. Its factory-calibrated sensor elements ensure consistent performance, making it perfect for IoT applications, weather stations, smart agriculture, home automation, and HVAC systems.
With its simple single-wire digital interface, it can be easily connected to Arduino, Raspberry Pi, ESP32, STM32, and other microcontrollers for quick integration into electronic projects. Compact, lightweight, and energy-efficient, this module is ideal for long-term environmental monitoring.
Features
The DHT22 is a basic, digital temperature and humidity sensor compatible with most microcontrollers including the ArduinoIt 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.Simply connect the first pin on the left to 3-5V power, the second pin to your data input pin and the right most pin to ground.
2-in-1 Sensor – Simultaneously measures temperature and humidity. Digital Output – Easy communication with microcontrollers. Wide Compatibility – Works with Arduino, ESP8266, ESP32, STM32, and Raspberry Pi.
Specifications
3 to 5V power and I/O
2.5mA max current use during conversion (while requesting data)
Good for 0-100% humidity readings with 2-5% accuracy
Good for -40 to 80°C temperature readings ±0.5°C accuracy
No more than 0.5 Hz sampling rate (once every 2 seconds)
Body size 27mm x 59mm x 13.5mm (1.05″ x 2.32″ x 0.53″)
4 pins, 0.1″ spacing
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