Room Sensor for Relative Humidity and Temperature

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  • Humidity
  • Temperature


The HTS201 room sensor is dedicated for accurate and reliable measurement of relative humidity (RH) and temperature (T) in residential and commercial building automation. The elegant enclosure is available in two sizes (EU and US format) and features an optional display.

  • HTS201 room sensor for relative humidity and temperature with display - EU format

  • HTS201 room sensor for relative humidity and temperature - EU format

  • HTS201 room sensor for relative humidity and temperature with display - US format

  • HTS201 room sensor for relative humidity and temperature - US format

    Outstanding Measurement Performance
    The E+E RH / T sensing element with proprietary protection ensures excellent long-term performance of the HTS201 over the entire working range and even in dusty and dirty environment. The innovative enclosure avoids false air ingress and significantly reduces self-heating.

    Outputs and Digital Interface
    The RH and T measured data is available either on two analogue outputs, or on the RS485 interface with Modbus RTU or BACnet MS/TP protocol. In the digital version, the HTS201 also calculates the dew point temperature (Td). The measured values can also be read locally on the optional graphic display.

    The version 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 HTS201 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

    Key Features

    • Highly accurate, long-term stable RH and T measurement
    • Calculation of dew point temperature Td (HTS201 with RS485)
    • RH / T sensing element protected by E+E proprietary coating
    • Modbus RTU, BACnet MS/TP or analogue outputs
    • Large graphic display (optional)
    • Snap-on enclosure for time-saving installation
    • EU and US enclosure format
    • Easy configuration
    HTS201 features

    Technical data

    Measuring range - Humidity
    0...100 % RH, non-condensing

    Accuracy - Humidity
    ±(2 + 0.003 * mv) % RH
    mv = measured value
    Measuring range - Temperature
    -30...+60 °C (-22...+140 °F)

    Accuracy - Temperature
    ±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 or BACnet MS/TP)
    Power supply
    15-35 V DC or 24 V AC ±20 %

    Calibrating your limits

    Your products and services can only be as precise as the tools you use to measure them. With more than 20 years of experience, the calibration team of E+E Elektronik focuses on providing a reliable service without any unnecessary delays or bias.

    Discover the value of working with an expert in calibration that prioritizes

    • accuracy,
    • fastness and
    • reliability

    Learn more

    Related products



    Downloads HTS201


    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.

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