The Delay until the Receptacle is turned Off. Setting
this value to other than -1 will cause the UPS output to
turn off after the number of seconds (0 is immediately).
Setting it to -1 will cause an attempt to abort a pending shutdown.
When this object is set while the UPS is On Battery, it is not necessary
to set xupsRecepOnDelaySecs, since the outlet will turn back on
automatically when power is available again.