TYREDOG TD-1400A-X4 - Manual (Page 34)

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Take 3rd for example
If tire pressure keeps dropping, every one PSI lower, it will warn again.
The situation will be stopped, when tire pressure is back to standard
value.
Note：Strongly suggest that as long as low tire pressure warning is on,
check tire situation first to ensure safety.
Tire pressure over topper warning value
If tire pressure is over topper warning range (default value= 45 PSI),
monitor will “Don” for five times and shown tire pressure warning on
monitor and continue “Don” “Don” “Don” for ten times, which means
high tire pressure now.
The picture is shown below to explain the rear-left tire has tire pressure
high now.