RBR duo3 C.T uv Manual page 21

Pressure switch
When your instrument goes underwater, the Wi-Fi will go off at the depth of 1-2m because the signal cannot get
through. However, even if the instrument stays on the surface, the Wi-Fi will go off after 60s of inactivity. Thus, there will
be no connection to the instrument while it is in the downcast phase.
During the upcast, the instrument will detect the drop in pressure and automatically switch on the Wi-Fi at about 2m
below the surface. The Wi-Fi will stay on for 60s. If your laptop is within reach during this time, Ruskin will reconnect to
the instrument and start downloading the dataset.
...
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This feature does not apply to shallow deployments (2m or less).
...
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The nominal Wi-Fi range for
challenging physical environments.
.
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If the Wi-Fi connection is lost in the middle of the download, Ruskin will continue from where it left off next
time it detects the instrument again, appending the original RSK file.
RBR#0015699revB
instruments in plastic housing is 30m, but it may be shorter in real life due to
21