Privacy Statement
Skip Ribbon Commands
Skip to main content
  • Product Info
  • Literature


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

Duct mounted Humidity and Temperature Sensor
Dimensions (in.)
3.95 in. dia, 2.25 in. deep, 7 3/4 in. probe length
Dimensions (mm)
100 mm dia x 57 mm deep with197 mm probe length
Used With
Excel 15, Excel 10, T7350
Ceramic resistance humidity sensor
Item Type
Operating Humidity Range (% RH)
0 to 100% RH
18-36Vdc or 18-28Vac
Operating Temperature Range (F)
-10 F to 160F
Operating Temperature Range (C)
-23C to 70C
Shipping and Storage Temperature Range (F)
-40 F to +150 F
Shipping and Storage Temperature Range (C)
-40 C to +65 C
Humidity-- 4-20 mA, 0-5 Vdc, or 0-10 Vdc selectable; Temperature--20K ohm NTC
±5% from 25-95% RH
There is no literature attached to this product, please try another material search. If you believe that there should be literature for this product, please contact Customer Care for website support.