Leica Rugby 260SG Manuel De L'utilisateur page 23

Sensitivity
Remote function
Rugby 260SG / 270SG / 280DG, Setup
The sensitivity setting allows the Rugby to operate in adverse environ-
mental and windy conditions, while still ensuring maximum accuracy.
The sensitivity can be set to Sensitivity Level SL1 or Sensitivity Level
SL2.
Select "SL1" for normal conditions.
Select "SL2" for very adverse conditions.
The remote function is enabled only when a remote is to be used
with the Rugby. It is normally off to save battery power.

Only the Rugby 280DG is remote capable and will show the
remote function.
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