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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
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