Testo 6621 Temperature and humidity transmitter-

Testo 6621 Temperature and humidity transmitter

The testo 6621 high-performance measurement transmitter is a dependable solution for building air conditioning applications. Offering excellent accuracy, long-term stability, and reliability, this transmitter meets the rigorous standards of building automation, helping to optimize efficiency and reduce costs.


Testo 6631 Temperature/humidity transmitter-

Testo 6631 Temperature/humidity transmitter

The testo 6631 temperature and humidity transmitter is specifically designed for use in greenhouses and laboratories, providing reliable monitoring of critical environmental conditions essential for biological research.