Hi amlago - would you please PM me with your email address? You ask very good questions and I would like to communicate more.
To answer you question for other readers: In general, the two most sensitive components are the ESP32 microcontroller (max +125°C) and the ZED-F9P (max +85°C). We have not tested to these temperatures. We have done testing up to 43C (110F) for extended periods of time (multiple hours) without problems. Please note that the system will not allow the battery to charge at temperatures above 42C (108F) to prevent damage to the battery.
it works excellent in ntrip base mode. Very satisfied.