Went out and bought a probe did a little test by all means i'm no " Jay " 
i got a pallet of heartland with the stove i bought, i thought they were cheap pellets so i was gonna just burn them up and use the Green Supremes for winter. I think i changed my mind these things are hot!
I will try the same test i did with those another day, but this is what i got
Heartland
Low setting 150
med setting 178
high setting 209
Quad setting 278........ my in the hurry homemade probe holder gave out might have went higher
For the record im a newbie so dont get techy on me just trying to share what i observed

i got a pallet of heartland with the stove i bought, i thought they were cheap pellets so i was gonna just burn them up and use the Green Supremes for winter. I think i changed my mind these things are hot!
I will try the same test i did with those another day, but this is what i got
Heartland
Low setting 150
med setting 178
high setting 209
Quad setting 278........ my in the hurry homemade probe holder gave out might have went higher
For the record im a newbie so dont get techy on me just trying to share what i observed