Relative Humidity, Temperature, and Barometric Pressure Probe

In stock (can be backordered)


  • Stainless steel enclosure and filter cap, engineered to shield sensing elements in harsh environments
  • Waterproof protection of internal electronics—only sensor elements are exposed
  • UV-protected and oil-resistant flexible cable
  • Low-power consumption suitable for battery-powered applications

Primary parameters

  • Relative humidity
  • Air temperature
  • Barometric pressure

Secondary parameters

  • Absolute humidity
  • Dew point
  • Wet-bulb temperature
  • Vapour pressure
  • Saturated vapour pressure
  • Atmospheric pressure at sea level
  • Heat index
  • Mixing ratio
  • Specific enthalpy
  • Boiling point of water
  • Speed of sound in air
  • Water activity in air

In stock (can be backordered)

SKU: 05419980214201 Categories: , Tags: , , , , , ,


The ERHTP is a robust, high-accuracy, digital probe. It measures multiple environmental parameters. Due to its low power consumption, versatile electrical interfacing options, and wide power supply range, the probe is compatible with a variety of battery-operated dataloggers and industrial data acquisition systems. A stainless-steel enclosure in combination with weatherproof electronic circuitries, and durable cable, ensure proper long-term operation even in harsh outdoor and industrial conditions. All primary parameters are sensed by physical sensors. The secondary parameters are calculated, based on values measured by the probe’s physical sensors.
The enhanced accuracy version of the probe provides high accuracy measurement of relative humidity and air temperature without user-defined calibration.
It is compatible with OneSense Pulse and Voltage and OneSense Environment and Agriculture sensor data acquisition devices.

Dowload datasheet

EVVOS RHTP Sensor SDI-12 Quickstart

Typical Applications

  • Environmental monitoring
  • Weather forecasting solutions
  • Industrial data acquisition
  • Precision agriculture/farming
  • Cold chain and HVAC applications
  • Internet of Things (IoT)

Electrical Interfacing Options

  • SDI-12 (v.1.4, user-selectable 3V/5V logic levels)

Additional information

Weight0.250 kg

250 g


18 x 155 mm

Cable length

1 m standard. Custom cable length on request.

Electrical Interface



You may also like…


Go to Top