Room Temperature Sensor
TES201
The TES201 accurately measures room temperature (T) in residential and commercial HVAC systems and is suitable for any indoor situation. The room sensor is available in two enclosure sizes (EU and US format) and features an optional display.

Measurement Performance
The state-of-the-art E+E temperature sensing element ensures highly accurate and long-term stable temperature measurement. The innovative enclosure of the TES201 avoids false air ingress and significantly reduces self-heating.
Outputs and Digital Interface
The measured data is available either on the analogue output or on the RS485 interface with Modbus RTU.
The TES201 with RS485 interface can be set up and configured via PC with the free PCS10 Product Configuration Software and an optional configuration adapter.
Installation-friendly Enclosure
The enclosure of the TES201 facilitates fast and thus cost-saving installation. The back cover with the push-in spring terminals can be mounted and wired without the front cover. This means that the electronics, which are accommodated in the front cover, are not exposed to construction site pollution. Before commissioning, the active part can be simply snapped onto the back cover. Besides, the electronics part can be replaced without tools within seconds.
Typical Applications
- Demand controlled ventilation
- Heating, ventilation and air conditioning
- Building automation
- Highly accurate, long-term stable T measurement
- Modbus RTU or analogue output
- Large graphic display (optional)
- Snap-on enclosure for time-saving installation
- EU and US enclosure format
- Easy configuration
- Measuring range
- -30...+60 °C (-22...+140 °F)
- Accuracy
- ±0.25 °C (±0.14 °F), voltage output / RS485±0.38 °C (±0.21 °F), current output
- Output analogue
- 0-10 V or 4-20 mA
- Output digital
- RS485 (Modbus RTU)
- Power supply
- 15-35 V DC or 24 V AC ±20 %
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

FAQ
Transmitter with "two-wire" technology receive the power from the process, and the signal is carried on return wire (closed current loop). With "three-wires" technology the power supply is separate from current output: 2 wires are the power supply and the third carries the signal.
Downloads TES201
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