Panasonic KX-TDA50 Features Manual page 365

Programming References
4.11.1 Doorphone [5-1]
Feature Guide References
1.15.2 Door Open
Timed Reminder : Repeat Counter
Specifies the number of times the alarm is repeated.
Default
3
Value Range
1–15
Programming References
None
Feature Guide References
1.23.4 Timed Reminder
Timed Reminder : Interval Time
Specifies the length of time between the repeated alarms.
Default
30 s
Value Range
10 × n (n=1–120) s
Programming References
None
Feature Guide References
1.23.4 Timed Reminder
Timed Reminder : Alarm Ringing Duration Time
Specifies the length of time the alarm rings.
Default
30 s
Value Range
10 × n (n=1–30) s
4.8 System [2]
Feature Guide 365