Now that I've had time to see the unit in operation, I have some more information that I thought I would post.
One the the most noticeable things is that the set point and control point, presumably the side-by-side green and red numeric displays, don't seem to display actual temperature.
When you power the unit on, both displays show exactly 200 degrees. After adjusting the set point to, say, 275 and hitting the set button, the temperature reading immediately and steadily starts climbing from 200 degrees exactly to exactly your setting. It never starts out any lower and never goes any higher.
I even tried turning off the unit while it was hot and then back on and it still starts out at exactly 200 degrees. I think it would be a simple matter to write a program that would do this with a delay and skip the actual temperature reading altogether. I actually doubt that this unit even has a temperature sensor.
I get the best results with relatively low settings - 250 to 275 degrees, compared to other units that friends have shown me. At 300 is does seem to slightly brown the surface of the herbs, appearing like a singed spot.
It seems to me that the unit does have good temperature control because even 10 degree adjustments affect performance and results, but there is no way that this thing is actually displaying a sensed temperature. It if was, the temperature would probably fluctuate by at least a degree or two while air is traveling through it. It's just thermodynamically impossible to hold a control point that precisely.
If that's the case, they've done a pretty crafty job of making something look really fancy while holding down the cost.
I'm bummed about it, but it still is a good performer. A setting of 275 on one day performs precisely like that setting on other days. High marks for consistent control.
But it sure seems like someone had an idea to simulate the temperature reading, rather than actually implement an actual sensor and temperature display. If this is the case, I'm feeling short changed.
Perhaps if some of the other manufacturers might let me try their units. Then I would take this unit apart and find out if there is a sensor or not and report back. Sound like a deal? (I hope, I hope...)