Hello to everybody!
I have some good news.
We are small Canadian company making access control electronic systems for army, government and for civil organisations as well.
As we have some special equipment to test our hardware to ensure its quality and reliability, our boss decided to test one of MT RBs the same way.
We are going to use some of these boards for our network outside.
There is the possibility to have the temperatures down to -35C during winter time in our region.
We put the RB433 inside the camera, powered, connected it to LAN and applied -40C for >3 hours.
Results of the test have appeared very optimistical: RB433 was living all the time, we did not even see any chages in time of reply for ping test.
Bravo Mikrotik!