I have purchased this electric heating thermostat for my AirBnB apartment as I've had some crazy guests who heated up to 29°C (!) room temperature. As I read that this thermostat had an admin mode I expected that it's possible to limit guests from setting up temperatures above a certain level and to limit guests from tampering with settings - unfortunately this has turned out as incorrect.
I am including this thermostat in the Home Assistant (HA) smart home solution. I unfortunately also had to find out, that the Zigbee implementation is not 100% as per the Zigbee standard - but thanks to the amazing HA community a basic method of including the thermostat into HA and controlling the temperature and switching the device on/off has now been found and implemented.
So all in all, this thermostat is workable for me.