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I2C Temperature & Humidity Sensor (Stainless Steel Shell)

$6.90
SKU: SEN0546
Volume Discount
  • $6.80 3+ items
  • $6.70 5+ items
  • $6.50 10+ items
I2C temperature and humidity sensor offers high accuracy, user-programmable alarms, stainless steel housing, and easy microcontroller integration via DuPont connector.
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    IntroductionApplicationsSpecificationDocumentsShipping List Review

    Introduction

    This I2C digital temperature & humidity sensor and features a user-programmable humidity & temperature alarm function.

    Its housing is made of 304 stainless steel to ensure good impact resistance, heat resistance, low temperature, and chemical resistance. The sensor output is designed as DuPont 2.54 connector for easy wiring. Also, there are two built-in 4.7K pull-up resistors and one 100nF filtering capacitor so the sensor can be directly used with microcontrollers like Arduino.

    This temperature & humidity sensor can be applied to electronic, medical, automotive, industrial, weather, and other fields, including home appliances like HVAC, dehumidifiers and refrigerators, testing & inspection equipment, and other relevant temperature & humidity measurements and controls.

    Pinout


    Version updates (10/7/2025):

    We are excited to announce a significant performance upgrade for I2C digital temperature & humidity sensor. The latest version now integrates a new-generation chip, delivering a major improvement in measurement accuracy.

    Key Improvements:

    This upgrade provides up to double the precision for humidity readings and a five-fold improvement in temperature accuracy.

    Accuracy SpecificationPrevious Version (CHT8305)New Upgraded Version (CHT832X)
    Humidity Accuracy±3.0% RH±1.5% RH
    Temperature Accuracy±0.5°C±0.1°C (Typical)

    Identifying Your Sensor Version:

    To ensure you use the correct documentation and tutorials, you can easily identify your sensor version by its wire color:

    New Version (CHT832X): The SCL wire is Green.

    Previous Version (CHT8305): The SCL wire is White.

    Applications

  • Smart HVAC System
  • Washer & dryer
  • Refrigerator & freezer
  • Cold Chain asset tracking & data logger
  • Environment Monitor
  • Portable/Wearable Weather Monitor
  • IP Camera

    • Specification

  • Operating Voltage: 1.8V~5.5V
  • Average Operating Current: 5.5uA (Typ.)@3.3V,1Con/s for Both temperature and humidity Conversion
  • Standby Current: 0.36uA (Typ.)
  • Temperature Accuracy with calibration:
             ±0.1℃(Typ.), ±0.3℃(Max.) from 10℃ to 50℃
             ±0.2℃(Typ.), ±0.6℃(Max.) from 0℃ to 85℃
             ±0.5℃(Typ.), ±1.0℃(Max.) from -40℃ to 125℃
  • Humidity Accuracy with calibration
             ±1.5%RH@20%RH~80％RH
  • Digital Interface compatible with SMB us and I2C,support:
             Packet Error Checking feature to improve communication
             Reliability and robustness
             Speed up to 1.0MHz
             SMB us General Call
  • Supports One-shot or continuous measurement
  • NIST traceability
  • Temperature Range: -40℃ to 125℃
  • Humidity Range: 0%RH~100%RH

    • Documents

    Shipping List

  • I2C Temperature & Humidity Sensor (Stainless Steel Shell) x1

    • Review

    krishna keshav.Chaudhary Oct 15, 2024

    I used this product for my greenhouse temperature and humidity data logger, and so far, it has worked perfectly—even in 100% humidity. While I haven't tested its IP rating, it's been reliable for my setup. I recommend this for DIY projects or even for more serious applications, as long as the wiring is kept short.

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