duct humidity



High quality duct mounted relative humidity transmitter in a NEMA 4X watertight injection-molded plastic enclosure.  Circuit boards are coated to resist moisture. On board  DIP switches enable user to change output signal in the field.  Accurate with long term stability. Dual filters to resist contamination and ensure reliability.

Humidity sensors are also available with accurate thermistors, RTDs or 4-20mA transmitters.

The polycarbonate cover and quick connect terminals make installation easy and reduce installation costs. Hinged cover stays open during installation.



  • Humidity or temperature/humidity option

  • Durable NEMA 4X injection-molded watertight enclosure

  • Patent Pending Quick Connect System eliminates wire nuts

  • NTC thermistors, RTD elements and transmitters available

  • Dual filters to protect from contamination

  • 2% / 3% /5% accuracies

  • Onboard DIP switches for selecting output in the field (0-5V, 0-10V & 4-20mA)

  • Coated circuit boards for moisture resistance

  • Adjustable length

  • Installed anti-vibration pad on flange

  • Compatible with most control systems

  • 1/2” NPT conduit adapter included

  • CE & RoHS compliant

  • 5 year limited warranty