brownout voltage detection

[camdenl]

Is there a default value for the brown out voltage on the R4 Moteino's?  Is it possible to set one or change the default?

[Felix]

It is set to 2.7V and it can be changed in the fuse settings. It should be below the VCC.
See moteino.com diagrams for default fuse settings and visit http://www.engbedded.com/fusecalc to find new settings.