For Sensor Averaging you would need to install multiple Analog Probes at strategic locations in greenhouse to get an overall temperature average.
You would land your 2 wire probes on any of the 8 Analog Inputs not being used. once installed you would then map your sensors.
From the home screen you would hit OK->3. System Setup->3.Sensor Setup
In the Sensor Setup Screen we will be using Button #1 Map Sensors and Button #4 Analog Sensor Mapping
First we will go into Map Sensors, press button #1, and we will map our In Temp to be AVERAGE.
After that we will Press Button #4 Analog Sensor Mapping and we will check the Analog Input locations we have probes installed on .
When Finished, hit OK, then Hit the back button or the Home Button until the banner to SAVE pops up and just hit OK.