Whadda CM2302 / DHT22 Temperature & Humidity Sensor
The Whadda CM2302 / DHT22 is a combined temperature and humidity sensor module for electronics prototyping and development projects. It provides accurate digital readings for both ambient temperature and relative humidity in a single compact component.
Integrated DHT22 sensor delivers reliable temperature and humidity measurements for environmental monitoring
Simple digital interface reduces wiring complexity compared to analog sensor alternatives
Wide operating temperature range makes it suitable for indoor and outdoor prototyping applications
Low power consumption allows continuous operation in battery-powered development setups
Das zeichnet den Whadda CM2302 / DHT22 aus
Unlike separate temperature and humidity sensors that require multiple components and additional calibration, the CM2302 / DHT22 combines both measurement channels in one module with a pre-calibrated digital output. The DHT22 sensing element offers better accuracy and stability than the earlier DHT11, particularly at higher humidity levels.
Ideal für...
Electronics hobbyists, STEM education projects, and prototype development teams who need a dependable all-in-one environmental sensing solution without the complexity of wiring multiple discrete sensors. The module is well-suited for Arduino, Raspberry Pi, and other microcontroller-based development platforms.
Anwendung von Whadda CM2302 / DHT22
Connect the module to a microcontroller development board via the standard digital pin interface
Use the provided library or write a simple read routine to obtain temperature and humidity values
Log or display the readings in your project dashboard, greenhouse monitor, or weather station prototype
Whadda is a brand focused on electronics components and development accessories, primarily distributed through Alltron in the Swiss market. The brand offers a range of sensor modules, prototyping boards, and electronic accessories aimed at hobbyists, students, and developers. Whadda products are typically positioned as entry-level, functional components for electronics education and project-based learning rather than precision laboratory instruments.
It measures both ambient temperature and relative humidity, providing digital readings through a single data pin.
The module works with any platform that supports a standard digital GPIO interface, including Arduino, Raspberry Pi, ESP32, and similar development boards.
The DHT22 sensor element supports a wide operating range from -40°C to +80°C, making it suitable for diverse indoor and outdoor prototyping scenarios.
No, the DHT22 sensor comes factory-calibrated. The digital output provides pre-processed temperature and humidity values without user calibration steps.
The module is supplied as a single sensor board. A mounting bracket or sample code is not included unless specified in the product listing.
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