User Manual for Handheld Pulse Oximeter
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sustaining for about 3 minutes, and if there is no any key
operation in this period, then the device will power off
automatically (if the auto power off function is turned on).
During measurement, longtime pressing Rotate-lock/Up key
"
", then the Rotate-lock icon "
" turns to blue "
",
it means the auto rotation function is turned on, if you place
this oximeter horizontally, then the display shows in
horizontal, as shown in figure 4.2B.
Sound indicator "
" means the device is on mute status,
the user can turn on the indication sound by short pressing
"
" key. Short time press "
" key can turn off (or
resume) the device sound (including pulse beep sound,
audible alert and key click), while the pulse symbol " " still
Figure 4.2B Default Display Screen---in horizontal
