The altitude derating of standard TM5 IO modules is the same for all TM5 modules but it doesn't mentionned on the documentation.
TM5 environmental condutions:
The TM5 altitude derating is a reduction of ambient temperature by 0.5°C per 100m:
0 to 2000m => No limitations
>2000m => -0.5°C / +100m
TM5 environmental condutions:
The TM5 altitude derating is a reduction of ambient temperature by 0.5°C per 100m:
0 to 2000m => No limitations
>2000m => -0.5°C / +100m