RHT-Air Wireless Temperature-Humidity Transmitter Mark 2

RHT-Air Wireless Temperature-Humidity Transmitter Mark 2

SKU: RHT-061

The new RHT-Air MK2 is a wireless transmitter that features high precision and stability sensor to measure both temp, relative humidity and dew point. Configuration can be accessed via its USB and IEEE 802.15.4 interfaces using the Modbus RTU commands. Can be powered from internal battery or external 10 to 35 VDC power supply

  • Manufacturer: Novus
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RHT-Air is a fully wireless solution for measuring temperature and humidity over long distances, allowing the configuration and reading of the parameters through the wireless network up to 1 km. Applications include building management, pharmaceutical manufacture and Data Center monitoring.

The RHT-Air is a wireless transmitter that when coupled with the AirGate-Modbus provides an excellent solution for wireless monitoring of temperature, relative humidity and dew point. Through the IEEE 802.15.4 wireless interface, multiple RHT-Airs may talk to one or more AirGates, providing this way USB and RS485 communication paths to the main SCADA or building system monitoring application.The Novus Automation RHT-Air transmitter includes high precision and stability sensors for measuring temperature and relative humidity. They are microprocessor devices that can be configured via its USB and IEEE 802.15.4 interfaces with Modbus RTU commands.

The DigiConfig software allows the access to real time information during system operation. Some of the parameters that the user can check are as follow:

  • Battery Level
  • Wireless reception signal intensity
  • Type of the wireless connection with other devices
  • Temperature, relative humidity and dew point

Please Note - For dusty environments a dust cap is recommended.

Power supply: 12 to 30 Vdc or 3.6 V Lithium Battery 

Maximum consumption: 70 mA 

Interval between updates: Configurable between 15 seconds and 10 minutes (600 s)

Estimated battery life: Typical 2 years - 10 minutes update interval at 25°C 


  • Measurement range: -40 °C to 100 °C / -40 °F to 212 °F 
  • Measurement accuracy: ±2 °C / ±3.6 °F 
  • Measurement resolution: 0.1 °C / 0.1 °F 


  • Measurement range: 0 to 100% RH 
  • Measurement accuracy: ±3% (20-80 °C / 68-176 °F) and ±5% (0-100 °C / 32-212 °F) 
  • Measurement resolution: 0.1% (12 bits - 4095 levels) 

Response time: 

  • Temperature: 30 Second (air speed 1 m/s) 
  • Humidity: 8 Second (air speed 1 m/s)

Display: LCD with 2 indicators

Communication interface: NOVUS air (IEEE 802.15.4)

USB configuration: Internal micro-B Type


  • CE
  • ANATEL (0172-13-7089)
  • FCC

EMC: EN61326-1:2006 CISPR11/EN55011, EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-6, EN61000-4-8 

Operating temperature: -10°C to 70°C (14 °F to 158 °F)

Operating humidity: 0 to 95% RH 

Probe size: 39 mm

Antenna size: 105 mm

Dimension: 70 x 60 x 35 mm 


The latest DigiConfig Software can be downloaded from the Novus Automation website at: http://www.novusautomation.com/products/527250

    • SKU
    • Weight
      0.3 kg
    • Dimensions (L x W x H)
      11 x 11 x 7 cm

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

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