Do you have overheat protection feature in the firmware (shutting miner off automatically, or better yet auto adjust individual chips) ?
Yes, of course, we do DVFS on the ASICs. One of the DVFS parameter is the individual ASIC temperature.
(We have temperature sensors on the ASICs, AC2DC (PSU), DC2DC and three on the PCBs)
If you do, is it configurable ? ( adjusting temp threshold)
No, but we'll have all the source code opened. Changing the default firmware will void warranty of course.
We do allow different mining modes with the default firmware, which results in different power consumption.