Re: Extreme environment suitability? AUTO ON and bypass ON/O
fit-PC2 works well outdoors in Nevada summer, outdoor in New Delhi and on arctic cruises. It is not affected by dust at all. Overall I expect you to be satisfied with the robustness.
All units are auto-on for a year now.
There is no support for bypassing power-button. You can take the cap off or cover/glue it so it is not pushed accidentally.