Digital Humidity Sensors

HYT 939 Hermetically Sealed Digital Humidity Sensor

Based on the HYT939 humidity sensor, the HYT939 MOD, is a digital humidity and temperature probe designed for sophisticated industrial applications. Resistant to pressure up to 16 bar, the probe location is about 28 mm in length with a cable length specified at order placement.

I2C compatible interface is standard with an operating temperature range from -40C to 80C. The humidity accuracy is ±1.8% rH at 23°C and temperature accuracy is ±0.2°C.


  • Measurement range of 0 to 100% rH, -40°C to 125°C
  • Interchangeable without adjustments
  • Resistant to pressure up to 16 bar
  • I2C protocol (address 0x28 or alternative address)
  • Low operating voltage of 2.7 to 3.3V
  • RoHS conformance


  • Medical systems
  • Autoclaves
  • Pressure dew point measurement
  • Drying systems
  • Laboratories