Thanks for clarification. I still think it is crucial to keep temperature of the components and chips at the minimum, even if they function normally, so devices will last much longer.
And since MikroTik devices have temperature sensors in them I will monitor them for some time and see if they require heatsink to be installed.
That's true. Although not every Mikrotik has a temperature sensor.
Looking at my 750Gr3, fixed at the wall. Its temperature reading is at 45 Celsius. This unit is tested by Mikrotik up to 70 ambient Celsius. Looks good to me.
Looking at two 1100AHx2, on the rack. Its temperature reading is at 42 and 44 Celsius. These units are tested by Mikrotik up to 60 ambient Celsius. Looks good to me too.
But I have another 3 hAP AC Lite, which don't have temperature sensors. They are certified to 70 ambient Celsius too, and are just warm to the touch - just like the 750Gr3. Must be good too.
The Mikrotik routers are quite a sturdy bunch. I have little experience with them - but we have people here with (literally) thousands of them on the wild. I don't remember to see a thread with someone complaining of death heat.