AGPtek C101B1 Quick Start Manual page 8

button ( ＞ 2s) to select
the PRbpm parameter from
100 to 140 for the highest
setting warning (Pic.2). At last,
long press button ( ＞ 2s)
again to select the PRbpm
parameter from 50 to 80 for
the lowest setting warning
(Pic.3).
Pic.3
Pic.1 Pic.2
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