Monitoring over Multiple Units(Up to 32 Channels) With Dynaview HTX and AX7241(USB-RS485 converter), up to 32 units can be monitored. It provides a number of advantages as well as easy maintenance, cost savings, and risk management. Temeperature, Humidity HTX series are temperature/humidity transmitters and Dynaview HTX can monitor the related data in real time. Free Download at Dotech's Website Anyone can download Dynaview FX at Dotech's website(www.dotech21.com) for free and install on his or her own PC. Saving the Unlimited Data on PC Storage All the data can be saved as much as your PC storage allows. Actually the capacity is unlimited depending on your purpose and management skills.