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Veris HD2LP2A Duct Relative Humidity Sensor

Sensor, Humidity, Duct, 2% Accuracy, Temp Trans, BAC/MB

  • Brand Name: Veris
  • Veris Part#: HD2LP2A
Agency Approvals      :      UL 916; CE: EN61000-6-2, EN61000-6-3, EN61000 Series, immunity, EN 61326-1; FCC Part 15 Class A; REACH, RoHS, RoHS 2 (China), RCM (Australia), ICES-003 (Canada), UKCA (UK)
Collection      :      Plant Room Air Quality Sensors
Communication Specifications      :      BACnet MSTP or Modbus via RS-485, selectable
Communication      :      Protocol
Display Resolution      :      Temp: 0.1 °C or °F, Humidity: 0.1% RH
Display Type      :      LCD, Positive Display with Backlight
Enclosure Material      :      Polycarbonate; flammability rating UL 94 V0
Humidity Calibration Certificate      :      Replaceable RH element available in 1% & 2% with NISTcalibration certificate
Humidity Measurement Accuracy      :      ±2% from 10 to 80% RH @ 25°C (77 °F)
Humidity Measurement Linearity      :      Included in accuracy specification
Humidity Measurement Resolution      :      0.1% RH
Humidity Output Range      :      0 to 100% RH
Humidity Sensor Type      :      Thin-film capacitive, replaceable
IP Protection      :      IP65
Input Specifications      :      Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Measurement Type      :      RH / Temperature
Measurement Values Displayed      :      Temp: °C or °F, Humidity: % RH
Operating Humidity      :      0 to 95% RH non-condensing
Operating Temperature      :      -25 to 70 °C (-13 to 158 °F)
Temperature Measurement Accuracy      :      ±0.2 °C (±0.4 °F) typical
Temperature Measurement Range      :      0 to 50 °C (32 to 122 °F)
Temperature Measurement Resolution      :      0.1 °C (0.1 °F)
Temperature Sensor Type      :      Solid state, integrated circuit
Terminal Blocks      :      Screwless terminal block with spring actuator, 16-24 AWG
VOC Sensor Type      :      Solid state

HD2 Series Protocol Humidity Sensors provide an ideal solution for measuring relative humidity in a wide range of conditions. All models are equipped with a thin-film capacitive humidity sensor that is easy to replace in the field. A solid state temperature sensor provides high accuracy measurements.


HD2 is an all-in-one device combining humidity and temperature sensing. Intended for duct mount applications, the device ensures a building’s optimum temperature and humidity levels, resulting in greater energy efficiency.


Each device is an active sensor that converts a humidity or temperature measurement into BACnet MS/TP or Modbus RTU.



  • LCD Positive Display with Backlight
  • Minimize downtime and cost with replaceable RH element and temp transmitter
  • Calibration Free
  • Easy to install: Latch on sensor cover and screwless terminal block wiring with spring actuator
  • Different models in series are available based on application requirements for lower-cost installations.
  • pdf Datasheet https://www.veris.com//ASSETS/DOCUMENTS/ITEMS/EN/HD2 Protocol_d0723.pdf
  • pdf Installation guide https://www.veris.com//ASSETS/DOCUMENTS/ITEMS/EN/HD2 Protocol_GEX55253-00.pdf