CM2302 / DHT22 Temperature & Humidity Sensor Module
by Velleman
CM2302 is a temperature and humidity composite sensor. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure high reliability and excellent long-term stability.
The sensor includes a capacitive wet sensor and a high-precision NTC temperature sensor connected to a high-performance 8-bit microcontroller, ensuring the product's excellent quality, fast response, anti-interference ability and cost efficiency. Each sensor is being calibrated in a highly accurate humidity calibration room.
Compared to the DHT11, this sensor is more precise, more accurate and works in a bigger range of temperature/humidity, but its larger and more expensive.
Features
- ultra-low power consumption
- long transmission distance
- standard digital single bus output
- excellent long-term stability
- high-precision NTC
Specifications
- typical accuracy RH: +/- 2 % RH
- operating range RH: 0 to 99.9 % RH
- humidity response time: 5 sec
- typical accuracy temperature: +/- 0.5 °C
- operating range temperature: -40 to 80 °C
- interface: 1 wire
- supply voltage: 3.3 to 5.5 VDC
- supply current: max 1.5 mA
Manual
Firmware
We no longer stock this product
It's sad to say goodbye but sometimes we have to retire products to make way for new things.
You may still be able to buy this product directly from our friends at Velleman - check out their website!
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