Example of a door monitor

WARNING: This example has not been verified

$timer_garage_door = new  Timer();
$garage_door         = new  Serial_Item('DCCH', 'opened');
$garage_door        -> add             ('DCCL', 'closed');
if($state = state_now $garage_door) {
    set $timer_garage_door 120;
    play('rooms' => 'all', 'file' => "garage_door_" . $state . "*.wav");
}

if ((time_cron('0,5,10,15,30,45 22,23 * * *') and 
    ('opened' eq ($garage_door->{state})) and
    inactive $timer_garage_door)) {
    speak("The garage door has been left opened.  I am now closing it.");
    set $garage_door_button ON;
    set $garage_door_button OFF;
}