The DHT22 Digital Temperature sensor measures both air temperature and humidity through a single digital data pin (a communication line that sends readings as digital pulse sequences rather than analog voltages). The dht22 sensor price reflects its accuracy compared to basic sensors, covering a temperature range of -40°C to 80°C and a humidity range of 0 to 100 percent RH at 3.3V to 5V operating voltage.
The dht22 sensor uses a capacitive humidity element (a component that changes electrical capacitance with moisture content) and a thermistor (a temperature-sensitive resistor) built onto a single housing. The DHT22 requires a pull-up resistor (typically 10K ohm) on the data line for reliable communication.
The dht22 digital sensor connects to Arduino GPIO pins through a standard three or four-pin header. building weather monitors, humidity loggers, and greenhouse controllers use it this sensor. To start, connect VCC, GND, and data with a 10K pull-up resistor, then install the DHT sensor library in Arduino IDE. StemVolt provide this sensor tested for confirmed temperature and humidity output.
Related Product:
- Checkout The DHT11 Humidity And Temperature Sensor Module
Features:
- Temperature range from -40°C to 80°C covers refrigeration monitoring and high-temperature industrial applications
- Humidity operating range from 0 to 100 percent RH allows full-range indoor and outdoor moisture sensing
- dht22 digital temperature and humidity sensor single-wire digital output reduces wiring to three connections only
- Operating voltage from 3.3V to 5V connects directly to Arduino and ESP32 without a voltage regulator
Technical specifications:
| Specification | Details |
|---|---|
| Model Type | DHT22 Humidity Sensor |
| Operating Range | Humidity 0-100% RH |
| Operating Voltage | 3.3V ~ 5V |
| Humidity Precision | ±2-5% RH |
| Temperature Range | -40°C to +80°C |
Applications:
- Room humidity monitor uses this sensor to display temperature and humidity on an LCD screen
- DHT22 Digital Temperature sensor reads ambient conditions and sends data to an ESP32 IoT dashboard
- dht22 sensor 4pins reads temperature and humidity over a single GPIO pin and logs to SD card
Package includes:
- 1 x DHT22 Digital Temperature
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