tekmar's tN4 Gateway 483 allows users to view and change the temperatures of all the thermostats in a tN4-controlled HVAC system through a computer web browser. The 483 can connect to systems that include only tN4 thermostats or to systems that also include outdoor reset controls. It provides daily or weekly status reports, and error messages through e-mail.

For more information, visit www.tekmarcontrols.com.