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1W-TH-IB2 on-wall temperature + humidity sensor


Compact 1-Wire on-wall temperature and humidity sensor. Designed for measuring temperature and relative air humidity in building interiors. 

Note: The product is a development successor to the 1W-TH-IB sensor. 

39,99 €
33,05 € excl. VAT
Less than 20 items in stock



The 1W-TH-IB2 sensor is designed for interior measurements of temperature and relative humidity in buildings. Its circuit board is placed within an on-wall box (IP30 protection). The sensor can be also placed within a universal wiring box (KU68).

The sensor communicates with the master system using the 1-Wire bus (screw terminal, four conductors) and is fully compatible both the Mervisan officially supported SW platform for Unipi products and with the EVOK, an open-source application programming interface (API). For more info about the available software, please visit Unipi Knowledge Base. 

  • Mervis: The device is compatible with the SEDtronic sensor line, allowing the user to use the same Unica_U1WT function block to read the values. 
  • EVOK: The sensor is detected automatically and can be used right away. Measured values are accessible on an address of the particular sensor also serving as a device identification. You can find the address on a sticker provided with the product. 

Installation guide and technical parameters can be found in the product's datasheet (see the Files tab above) 

Further info


Product datasheet
Datasheet of the product

Installation Installation box (KU 68)
Humidity measuring range 11 % RH / 89 % RH (+-3 % RH tolerance)
Connection 1-Wire (screw terminal)
Sensor type DS18B20 (temperature), DS2438 (humidity)
Temperature measuring range -40 °C/+85 °C with +-2 °C tolerance
Power 5 V (via the 1-Wire connector)
Case material ABS plastic
Dimensions 100 × 100 × 25 mm
IP rating IP30
Max. current draw 2 mA