The HR202 Humidity Sensing Sensor Module is an analog humidity sensor operating from 3.3V to 5V, offering stable and accurate humidity detection with a response time under 5 seconds and a wide -40°C to 85°C operating temperature range. The hr202 humidity sensor uses a resistive sensing principle — its internal element changes electrical resistance proportionally to the ambient relative humidity, and this resistance change is read as an analog voltage output, different from the capacitive sensing approach used in DHT11 and DHT22 sensors.
Per the hr202 humidity sensor datasheet, the analog signal output means the sensor integrates directly into an Arduino analog pin without requiring a timing-sensitive single-wire protocol or dedicated library — the hr202 humidity sensor arduino connection reads humidity changes as a voltage variation through analogRead(), similar to how a thermistor reads temperature. The -40°C to 85°C operating range is notably wider than DHT11’s 0-50°C ambient limit, making this hr202 humidity detection sensor suitable for cold-chain monitoring, outdoor installations, and industrial environments where temperature extremes are expected.
humidity-only analog sensor, the HR202 module does not include integrated temperature sensing — combined temperature and humidity measurement requires pairing it with a separate temperature sensor or choosing a DHT22 for dual-parameter sensing in one package. StemVolt provide this module is well-suited for makers building dedicated humidity monitoring systems and practical atmospheric sensing electronics projects.
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Features:
- Resistive humidity sensing — analog output, no library required
- Response time under 5 seconds for fast humidity change detection
- -40°C to 85°C wide range suits extreme outdoor environments
- 3.3V to 5V compatible with Arduino and ESP32 boards
- Low power consumption suited for battery-powered sensor nodes
Technical Specifications:
 Applications:
- HR202 Sensor used for Arduino humidity monitoring station build
- College project uses hr202 humidity sensor for atmospheric sensing demo
- Cold chain uses hr202 humidity sensor datasheet for India storage monitoring
- Industrial setup uses hr202 humidity sensor arduino for outdoor humidity logging
Package Includes:
- 1 x HR202 Humidity Sensing Sensor Module
Tarun Khandelwal –
It provides reliable humidity detection and is suitable for school projects, environmental monitoring systems, and arduino-based applications
Pooja Sharma –
Will order again
Sanjay Gupta –
Original product received
Vivek Agrawal –
Quick delivery with bubble wrap packing ensured safe arrival, while technical support was available to assist with sensor integration and project development.