Thanks for the answer, following question is if it is good idea to use Zenoss for monitoring status of HVAC (sensors, input and output states). I searched over the internet and I didnt find another type of solution, Zenoss, nagios, zabbix or Dude is everything for monitoring internet infrastructure.
I have another question, is possible to setup multiple users, where one user can access only selected devices? Like service engineer can access only his units.
Thanks Jirka