The W8735A EnviraCOM Serial Adapter provides local access to an EnviraCOM HVAC system through a host computer, gateway, or controller. The host provides the application to control the W8735A and the HVAC equipment.

The EnviraCOM Serial Adapter allows a user to control Honeywell EnviraCOM Communicating Thermostats, EnviraZONE Systems, and other HVAC products by using any manufacturer's RS-232 compatible home automation control system.

  • Use with YTH9421C VisionPRO IAQ thermostat, or with W8835 EnviraZONE zone control panel.
  • Can be used with W8735D Telephone Access Module.
  • Allows easy integration to host controllers, gateways and computers.
  • Uses standard DB-9 connector.
  • Powered through EnviraCOM bus; no external power source required.
  • Uses true RS-232 signals; universally compatible.
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