User Manual

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 Warning Duration
It gives an alarm if the door is still open after the specified time
elapses. If the alarm sounds, check why the door is not closed and
take necessary steps to make sure that the door closes normally.
Specify a value between 1 and 20, but it should be greater than
the door open time. Use the number keys to enter the value and
press the Enter key.
Ｗａｒｎ． Ｄｕｒａｔｉｏｎ
（１ － ２０） ： １０
These features may not work in some types of doors.