Testo India Pvt. Ltd.
Testo India Pvt. Ltd.


Air Conditioning Humidity/Temperature Transmitter

Humidity Temperature Measuring Instrument
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Model ID: Testo 6621

The testo 6621-specially designed for use in air conditioning technology to regulate and monitor air conditioning in buildings such as office buildings, museums, hotels, hospitals and air conditioning in storage and production facilities as well. Placed in the lower price range and equipped with the features important for the application range.




  • An attractive, simple design, ideally suited for use in public view
  • The reliable, tested Testo humidity sensor
  • Fast and easy on-site adjustment with Testo handheld instruments (types testo 400 and testo 650)
  • Easy-to-use P2A software for parameterization or adjustment

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