🌡️ Humidity CJ-HR31 Sensor Module (Pack of 10)

What is it?

The CJ-HR31 Humidity Sensor Module is a high-performance capacitive humidity sensing element built with advanced organic polymer materials. It detects ambient humidity with accuracy and stability, making it ideal for integration into electronic systems that require reliable environmental monitoring.

This pack of 10 ensures you have multiple units for prototyping, classroom use, industrial projects, or batch production.

What makes it special?

• Wide Application Range: Suitable for warehousing, transportation monitoring, HVAC, indoor air quality, building automation, agriculture, medical equipment, and industrial control systems.
• Fast & Reliable: Responds to changes in humidity in as little as 20 seconds (absorption) and recovers in 40 seconds (dehumidification).
• Stable & Durable: Offers <1% RH drift per year, ensuring long-term accuracy and dependable performance.
• Low Power, Compact Design: Operates at just 1.5V AC with minimal power consumption, making it suitable for embedded systems and portable devices.
• High Sensitivity Polymer Film: Uses a new organic polymer material that provides consistent, repeatable results in demanding environments.

Key Features

• Rated Voltage: 1.5V AC (max, sine wave)
• Rated Power: 0.2 mW (max, sine wave)
• Operating Frequency: 500Hz \~ 2kHz
• Operating Temperature: 0 \~ 60°C
• Operating Humidity: ≤95% RH (non-condensing)
• Hysteresis: <2% RH

• Response Time:

• Absorption: <20s

• Dehumidification: \~40s
• Stability: <1% RH per year
• Accuracy: ±5% RH
• Resistance Value Range: 19.8 \~ 50.2 KΩ at 25°C, 1kHz, 1V AC
• Nominal Center Value: 31 KΩ at 60% RH

Package Includes

• 10 × Humidity CJ-HR31 Sensor Modules

⚡ Whether you are a DIY hobbyist, an IoT developer, or working on industrial automation, this sensor pack provides a cost-effective and reliable solution for precise humidity monitoring.