CM2302 / DHT22 TEMPERATURE & HUMIDITY SENSOR MODULE

Description

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.

This product is a replacement of: VMA345

Features

• Efficient energy consumption: This sensor has low power consumption, meaning you can reliably collect temperature and humidity data without worrying about energy costs.
• Long-distance signal transmission: This sensor uses digital single-bus signal transmission, allowing you to send data over long distances without loss of quality.
• Versatile applications: This module is versatile and suitable for various applications, from automation, home automation and robotics to environmental and industrial monitoring.
• STEM project: Develop and improve your STEM skills and acquire the knowledge, skills and experience needed to face the technological challenges of the future with this educational kit. This educational kit will trigger a number of processes such as problem-solving, investigative and creative thinking.
• Made in Belgium: Whadda is a unique brand from Belgium’s Velleman Group that offers DIY projects for hobbyists or makers who want to immerse themselves in electronics, programming and mechanics.

Specifications

• Product basic info:
  • Instruction manual languages: English
  • Primary colours: White
  • Depth unit: 3.8 cm
  • Height unit: 15.5 cm
  • Width unit: 7.8 cm
  • Weight unit: 25 g
• Technical data:
  • Specifications kits & modules: <ul> <li>ultra-low power consumption</li> <li>long transmission distance</li> <li>standard digital single bus output</li> <li>excellent long-term stability</li> <li>high-precision NTC</li> </ul> <ul> <li>typical accuracy RH: +/- 2 % RH</li> <li>operating range RH: 0 to 99.9 % RH</li> <li>humidity response time: 5 sec</li> <li>typical accuracy temperature: +/- 0.5 C</li> <li>operating range temperature: -40 to 80 C</li> <li>interface: 1 wire</li> <li>supply voltage: 3.3 to 5.5 VDC</li> <li>supply current: max 1.5 mA</li> </ul>
• Operational properties:
  • Coding skill level: none
  • Electronics skill level: none
  • Mechanics skill level: none
  • Soldering skill level: none