Enable this option (checkmark visible) to enable the security mode. When security mode is enabled, the event trigger time is randomly set to plus or minus 30 minutes from the actual set time. This can give your home a lived-in look because lights and other devices won't be turned on at the same time day after day.
Note that not all trigger types support the security mode.
The current time offset for the event is displayed next to the event trigger in the Events screen. If the offset was randomly set to +20 minutes, the event trigger will be followed by:
(Sec: 20)
The offset time can be set in the General Setup screen.