Humidity and Temperature Transmitter for High-end Meteorological Applications
EE33-M
Important information:
Please note that the EE33-M has been discontinued. Do not use/ specify EE33-M for new projects, it is replaced by HTS801 humidity and temperature sensor.
EE33-M is optimised for reliable humidity and temperature measurement in high-end meteorology applications.

A dual heating system prevents condensation on the humidity sensor, on the sensing probe and on the filter cap. This leads to an extremly short response times and fast recovery after condesing conditions.
The measuring principle with separate humidity and temperature probes enables precise and continuous measurement even at permanent high humidity.
The proprietary coating protects the sensors and their leads against corrosive and electrically conductive pollution.
Typical applications
- Meteorology
- Wind turbine generators
- Road icing warning
- Off-shore measurements
- Highest measurement accuracy with monolithic humidity sensor
- Condensation prevention with dual heating system (sensor and probe heating)
- Short response time and fast recovery after condensing conditions
- Precise measurement at permanent high humidity
- Outstanding temperature compensation
- Sensor protection against pollution and corrosion
- Probes compatible with modern, ventilated radiation shields
- Analogue current and voltage outputs configurable by the user
- Optional RS-485 and standard RS-232 interface
- Additional physical quantities calculated
- Measuring range
- 0...100% RH-40...180 °C (-40...356 °F)
- Accuracy
- ±1.3% RH±0.2 °C (±0.36 °F)
- Response time
- < 15s
- Outputs
- 0-1/5/10 V or 0/4-20 mA
- Supply
- 24V AC/DC
Custom solutions for precise results
For more than 40 years, E+E Elektronik has been developing and manufacturing its highly precise and long-term stable sensors exclusively at its headquarters in Engerwitzdorf, Austria. The high level of vertical integration – from the sensor element to the precisely calibrated measuring device – ensures compliance with the highest quality standards and enables a quick response to customer-specific requirements.
E+E Elektronik offers:
- Accredited sensor calibration for the highest quality standards
- Efficient service – worldwide through local offices
- Short delivery times
