RHI Series, Small Humidity and Temperature Unit, Humidity sensor

Shinyei Technology

Humidity Sensing

Small Humidity and Temperature UnitRHI series

RHI series which has the custom IC is calibrated one by one and provides highly accurate measurement and linear output by analog voltage or digital I2C in a wide range of relative humidity.


  • High Accuracy: ±3%rh (at 25℃ 50%rh)

  • Low Temperature Dependency

  • Supply Voltage: 3.15 to 5.5V

  • Wide Humidity Range

  • Linear Output Voltage: 0-3V (at 90%rh: 3V)

  • Analog or Digital output(I2C)

  • Low Voltage dependency (include regulator in IC)

  • Low Power Consumption (1/4 of the conventional products)



RHI series

Supply Voltage 3.15 to 5.5Vdc
Operating Temperature 0 to 60℃
Operating Humidity Range 10 to 95%rh
Humidity Output Analog: 0 to 3.3Vdc
Digital: I2C
Humidity Measurement Accuracy ±3%rh (at 25℃ 50%rh)
Temperature Detection

Analog : Thermistor
Digital: IC Sensor


  • Copying Machine, Printer
  • Air conditioner, Humidifier, Dehumidifier
  • HVAC equipment