Support modules are used to either monitor or control temperature or humidity at a location other than the thermostat. They communicate with the thermostat using a RS-485 protocol. Up to four support modules may be wired to a thermostat, with each module able to support two sensors.
The Model 8062 has one onboard temperature sensor (sensor #1) and one onboard humidity sensor (sensor #2). All sensors can be configured as either a control sensor (replaces thermostat temperature sensor as control variable) or a monitor sensor (read only).