Mitsubishi Electric DX-TL4509E Quick Start Manual page 15

Note: When change is detected continuously, some functions such as setting change are not available
because alarm recording is also continuously performed. In this case, motion detection function can be
forcibly stopped for five minutes by setting the
"Alarm Input" option 6 in the Recording Setting menu to "Off."
You can change the settings by stopping recording during this time.
This stopping is automatically released five minutes after the operation, and registered in the system log list.
(211 000 000)
To cancel the prohibition of alarm input manually, set option 6 to "On."
Please refer to Page 59 of the DX-TL5000E for more information.
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