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The H7625, H7635, and H7655 are highly accurate, stable humidity transducers designed for use with HVAC controllers such as the T7350 Thermostat, T775U Universal Controller, and W7760 Direct Digital Controllers. The Ceramic Technology humidity sensor is not affected by condensation and provides excellent long-term stability.


  • Ceramic Technology overcomes the limitations of other resistance based humidity sensors that use water soluble polymer coatings.
  • Ceramic Technology allows sensors to recover fully from condensation, fog, and high humidity.
  • Highly accurate, repeatable, stable output with negligible hysteresis.
  • Temperature compensated output. Zero and span trimmers, and increment/decrement recalibration feature.
  • All units except the H7655A have selectable 4-20 mA, 0-10 Vdc, or 0-5 Vdc output. NIST traceable 2%, 3%, and 5% calibration, every sensor calibrated at 3 different points.
  • All humidity sensors use the same enclosure as the T7770 sensor, except the H7655A, which uses the T7047-like enclosure.

Product Specifications

Wall mounted Humidity Sensor
Dimensions (in.)
4 5/8 in. high x 3 5/8 in. wide x 1 5/16 in. deep
Dimensions (mm)
118 mm high x 93 mm wide x 33 mm deep
Used With
XL15, XL10, T7350
Polymer capacitance humidity sensor; Uses different enclosure (same as T7047 Sensor).
Item Type
Operating Humidity Range (% RH)
10 to 90% RH
16-40Vdc or 16-30Vac
Operating Temperature Range (F)
Operating Temperature Range (C)
0 to 50C
Shipping and Storage Temperature Range (F)
-40 F to +150 F
Shipping and Storage Temperature Range (C)
-40 C to +65 C
Humidity-- 0-10 Vdc
±5% from 30-70% RH
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